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Optimization of Nutrition And Medication (OptiNAM) for acutely admitted older patients: protocol for a randomized single-blinded controlled trial
Trials volume 22, Article number: 616 (2021)
Internationally, older patients (≥65 years) account for more than 40% of acute admissions. Older patients admitted to the emergency department (ED) are frequently malnourished and exposed to inappropriate medication prescribing, due in part to the inaccuracy of creatinine-based equations for estimated glomerular filtration rate (eGFR). The overall aims of this trial are to investigate: (1) the efficacy of a medication review (MED intervention) independent of nutritional status, (2) the accuracy of eGFR equations based on various biomarkers compared to measured GFR (mGFR) based on 99mTechnetium–diethylenetriaminepentaacetic acid plasma clearance, and (3) the efficacy of an individualized multimodal and transitional nutritional intervention (MULTI-NUT-MED intervention) in older patients with or at risk of malnutrition in the ED.
The trial is a single-center block randomized, controlled, observer-blinded, superiority and explorative trial with two parallel groups. The population consists of 200 older patients admitted to the ED: 70 patients without malnutrition or risk of malnutrition and 130 patients with or at risk of malnutrition defined as a Mini Nutritional Assessment-Short Form score ≤11. All patients without the risk of malnutrition receive the MED intervention, which consists of a medication review by a pharmacist and geriatrician in the ED. Patients with or at risk of malnutrition receive the MULTI-NUT-MED intervention, which consists of the MED intervention in addition to, dietary counseling and individualized interventions based on the results of screening tests for dysphagia, problems with activities of daily living, low muscle strength in the lower extremities, depression, and problems with oral health. Baseline data are collected upon study inclusion, and follow-up data are collected at 8 and 16 weeks after discharge. The primary outcomes are (1) change in medication appropriateness index (MAI) score from baseline to 8 weeks after discharge, (2) accuracy of different eGFR equations compared to mGFR, and (3) change in health-related quality of life (measured with EuroQol-5D-5L) from baseline to 16 weeks after discharge.
The trial will provide new information on strategies to optimize the treatment of malnutrition and inappropriate medication prescribing among older patients admitted to the ED.
Trail registration
ClinicalTrials.gov NTC03741283. Retrospectively registered on 14 November 2018.
Internationally, older patients (≥65 years) account for 41–46% of acute admissions [1,2,3]. Among older patients admitted to the emergency department, the prevalence of the risk of malnutrition and malnutrition ranges between 35 and 71% in acutely admitted older patients [4,5,6,7,8] and the prevalence of polypharmacy (≥5 prescribed medications) is 73–77%, while 51–85% receive at least one potentially inappropriate medication (PIM) [9,10,11,12]. Both malnutrition and polypharmacy are associated with decreased quality of life [13,14,15,16], and these risk factors are often comorbid, as 64–87% of older patients at risk of malnutrition present with polypharmacy [5, 6, 9]. However, interventions to address malnutrition and inappropriate medication prescribing in the ED are limited by the acute setting. The median length of stay (LOS) for acutely admitted older medical patients is 2.2–4.5 days [17, 18], and more than half of all patients admitted to the ED are discharged without being transferred to another department [6, 8, 19]. Consequently, some of these patients will be discharged before initiatives to overcome malnutrition or inappropriate medication have been started. Therefore, it is essential that interventions to optimize nutritional care and medication prescribing are started in the ED and continued after discharge (transitional care).
Inappropriate prescribing and medication review intervention
Polypharmacy is common among older patients in part because medications are readily prescribed for new conditions, but the appropriateness of continuing each medication is rarely evaluated [20,21,22]. Polypharmacy and other causes of inappropriate medication prescribing may lead to adverse drug reactions, which are responsible for up to 15% of unplanned hospitalizations [23]. Therefore, dose adjustment and deprescribing of inappropriate medications are important components of medication reviews for older patients [24]. Medication optimization in older patients is challenging due to the presence of comorbidities and individual variations in age-related physiological changes including pharmacokinetic, pharmacogenetic, and pharmacodynamic responses to medications [25, 26].
Pharmacist-led medication reviews have been proposed as an important component of optimizing medication prescribing [27], but there is conflicting evidence regarding the impact and efficacy of medication reviews for older patients in the ED [28,29,30,31,32]. International studies have shown that collaboration between pharmacists and physicians in multidisciplinary hospital teams can decrease inappropriate prescribing among older patients in a transitional setting [33,34,35]. We have previously shown that a medication review in the ED is feasible and led to increased medication appropriateness between admission and discharge in 64% of the patients [36]. However, this finding has never been demonstrated among older patients in the ED using a randomized controlled trial. Therefore, we aim to use a randomized controlled trial to determine the efficacy of a medication review (MED intervention) in a cohort of acutely admitted older patients both without and with risk of malnutrition.
Accuracy of estimated glomerular filtration rate in older medical patient
Another challenge during medication optimization is the accurate assessment of renal function [37, 38]. This is important because approximately 40% of all medications require dose adjustment according to renal function [39]. In clinical practice, renal function is typically determined with estimated glomerular filtration rate (eGFR) based on the measurement of serum creatinine. However, serum creatinine is heavily dependent on non-GFR determinants such as muscle mass, nutritional status, and sex, which can result in inaccurate eGFR and, therefore, inappropriate prescribing of renally cleared medications among older patients [40, 41]. Alternative markers of kidney function such as cystatin C, beta-trace protein (BTP), and beta-2-microglobulin (B2M) are less dependent on muscle mass, age, and sex compared to serum creatinine and may be more appropriate in older patients [40,41,42]. However, these novel biomarkers may be affected by other non-GFR determinants, such as inflammation, and there is a lack of knowledge regarding their impact among acutely admitted older patients [40, 41]. Therefore, we aim to determine which kidney marker or combination of markers is most accurate for older medical patients, as well as the impact of non-GFR determinants on this accuracy.
Malnutrition and nutritional intervention
Malnutrition can lead to decreased physical function and quality of life, rehospitalization, and death [43,44,45]. Malnutrition among older adults often has a multifactorial etiology [46] including dysphagia [47, 48], poor appetite [49,50,51], dry mouth [52], problems in the oral cavity [48, 50], polypharmacy [49, 53], hospitalization [50], decreased cognitive capacity, and decreased ability to perform activities of daily living such as cooking, grocery shopping, and eating [48]. Medications can also contribute to the development of malnutrition, as they can induce dry mouth [54], nausea [55], constipation [56], diarrhea [56], and anorexia [57].
The European Society for Clinical Nutrition and Metabolism (ESPEN) recommends that nutritional interventions in older persons should be individualized, multimodal, multidisciplinary, and comprehensive to improve the quality of life. They also recommend that potential causes of malnutrition are systematically identified and eliminated if possible [58]. To our knowledge, however, there is no evidence regarding the effect of a multimodal and transitional nutritional intervention in acutely admitted older medical patients. Therefore, we aim to test the effect of an individualized multimodal and transitional nutritional intervention (MULTI-NUT-MED intervention) among acutely admitted older medical patients using a randomized controlled trial.
The study involving acutely admitted older medical patients has three primary aims (1) to determine whether a medication review intervention is superior to standard care in improving medication appropriateness from admission to 8 weeks after discharge, (2) to determine the accuracy of eGFR equations based on various biomarkers compared to mGFR at a single-time point, and (3) to determine whether an individualized multimodal and transitional nutritional intervention is superior to standard care in improving the quality of life from admission and 16 weeks after discharge.
The study also has the following secondary aims which are related to the effect of the intervention: (1) to measure differences in polypharmacy, PIM use, and assessment of underutilization between the MED-intervention and standard care from admission to 8 weeks after discharge and (2) to measure of the differences in body weight, protein- and energy intake, mobility, cognition, frailty, the intestinal microbiome, and health care costs between the MULTI-NUT-MED intervention and standard care from admission to 8 and 16 weeks after discharge and 1 year after discharge (only health care costs).
Secondary aims, which are based on baseline data or data from the control group, include assessment of (1) how information from a broad pharmacogenetic test can potentially improve medication prescribing appropriateness; (2) how polypharmacy, PIMs, nutritional status, frailty, and inflammation modify the effect of the MED-intervention on prescribing appropriateness; (3) how non-GFR determinants affects eGFR and how the choice of eGFR equation affects medication prescribing; (4) how the choice of malnutrition classification criteria affects the prevalence of malnutrition; and (5) how different definitions of frailty affect the distribution of patients classified as frail or sub-frail as well as the responsiveness of these methods.
Methods: participants, interventions, and outcomes
Overview and trial design
The OptiNAM trial is a single-center block randomized, controlled, observer-blinded, superiority, and explorative trial with two parallel groups. The trial starts upon admission to the ED and includes follow-up visits at 8 and 16 weeks after discharge and a telephone interview at 1 year after discharge in participants with MNA-SF≤11 to collect EuroQol-5D-5L. Figures 1 and 2 and Table 1 provide schematic overviews of the trial design. The trial was initiated on October 15, 2018, and adheres to the Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) Statement [59]. Trial registration data (Table 1s) and a SPIRIT checklist are provided in the Supplementary material.
The tax-funded Danish health care system is based on the principles of free and equal access to health care for all citizens. In Denmark, there are approximately 1 million acute hospital admissions each year, of which 46% are older persons [1]. This trial is conducted at Copenhagen University Hospital, Hvidovre, Denmark, which covers 10 municipalities with approximately 550,000 citizens and has about 14,000 medical admissions each year of which 85% are acute admissions [36]. The ED has a 29-bed-medical-ward handling acute medical admissions, and a separate emergency room (ER) handling minor injuries and traumas. Patients are referred to the ED by a general practitioner (GP), medical helpline, or emergency phone call. From the ED, a patient can either be discharged or transferred to a specialized medical ward. The hospital does not have a geriatric ward, but the ED is permanently staffed by geriatricians and clinical pharmacists. Dieticians, occupational therapists and physiotherapists are available for consult. Dentists are not part of the normal hospital staff.
Eligibility criteria, recruitment, and consent
Patients are eligible for inclusion if they are ≥65 years of age, acutely admitted to the ED, community-dwelling, and residing in one of the following municipalities: Hvidovre, Copenhagen (Districts of West and South Western Copenhagen), or Brøndby. Exclusion criteria are inability to understand Danish, inability to cooperate physically (e.g., hearing or speech impairment), or cognitively (e.g., dementia or unconsciousness), isolation room stay, not Caucasian, and admission due to suicide attempt or terminal illness.
Participants are recruited up to 36 h after admission. Each morning (Monday through Thursday), patients are assessed for eligibility from a randomized computer-generated list of all patients in the ED. Eligible patients are informed about the trial both verbally and in writing by a team of seven researchers and are given the possibility of a reflection period of 24 h to consent to participation. Participants are given the option to consent separately to GFR measurement and pharmacogenetic test. After obtaining written informed consent, each participant is randomized to either the intervention group or standard care, and baseline data are collected. After baseline data are collected, each participant is informed about the result of the randomization by staff performing the intervention.
The following strategies are implemented to minimize the effect of staff shortages on patients recruitment: (1) on days with insufficient hospital staff available to perform the MULTI-NUT-MED intervention, only patients with a Mini Nutritional Assessment Short-Form (MNA-SF) [60] score >11 are recruited (to the MED intervention only); (2) on days with insufficient community-based staff available to perform future nutritional intervention (e.g., due to vacation or long term illness), patients from these municipalities are not assessed for eligibility; (3) if more than 35% of the first 50 included patients (n = 50) have an MNA-SF score >11, then the project leaders can decide to exclusively recruit patients with an MNA-SF score ≤11 2 days of each week in order to achieve a sufficient number of participants with an MNA-score ≤11 (see the "Sample size" section). The expected recruitment rate is two participants per week for 100 weeks.
Standard care
The intervention is given in addition to standard care. The control group is offered standard care only. Standard care was chosen as the comparator as this is what needs to be improved.
Medication reconciliation is performed by a clinical pharmacist within 24 h of ED admission for all patients [61]. If available, an initial medication list is obtained from the admitting ED physician. This initial list is compared with the hospital's electronic patient record system and Shared Medication Card, a central containing information about all medications prescribed and dispensed within the previous 2 years [62]. Each participant is then asked to confirm the use of each medication. If a participant is unable to provide reliable information, then the medication list is confirmed with a caregiver (e.g., family member, GP, home nurse, nursing home staff, or community pharmacy). The final medication list is documented in the electronic patient record along with any discrepancies between the initial and final medication list. The final medication list is communicated to the providing geriatrician, who updates the participant's electronic prescriptions accordingly.
According to the regional nutritional guideline in the Capital Region of Denmark, all patients with an expected hospital stay of more than 24 h should be screened for nutritional risk during the first 24 h of hospitalization and have treatment initiated when relevant [63]. All trial participants are offered the same foods and nutritional products during hospitalization, except for the protein supplement P-Boost®, which is only offered to participants in the intervention group (see the "Dietary Counseling" section).
All municipalities offer food service (paid by the recipient) and home care meal support. None of the municipalities have systematic identification of malnutrition. The municipality of Hvidovre offers home visits from a dietician for citizens who experience unintentional weight loss or declining functional ability or if the municipality is informed of a citizen at risk of malnutrition during hospitalization. The dietician offers unlimited dietary counseling until the goal of counseling is reached, or the counseling is deemed to be unfruitful. The municipality of Copenhagen offers nutritional advice from a nurse to citizens identified as having malnutrition by care staff. The municipality of Brøndby offers dietary counseling from a community-based dietician to citizens with malnutrition who are identified by care staff. Due to the variation between the municipalities, randomization is stratified by the municipality.
The intervention is individualized: participants in the intervention group without malnutrition (MNA-SF >11) only receive the MED intervention, and participants in the intervention group with or at risk of malnutrition (MNA-SF ≤11) receive the MULTI-NUT-MED intervention (see Fig. 1 and Table 1).
Medication review intervention (MED intervention)
After the final medication list is obtained and baseline data are available, each participant is given a structured, patient-oriented medication review by the clinical pharmacist. All medications are reviewed to evaluate the (1) agreement with current national guidelines regarding choice of medication, dose, and dosing interval; (2) whether the goal of treatment has been met; (3) presence of nausea, constipation, diarrhea, loss of appetite, or dry mouth related to use of the medication; and (4) whether there is inadequate treatment of any current diagnoses or conditions. PIMs are identified using the Screening Tool of Older Persons' Prescriptions criteria version 2 [64]. Prescribing recommendations based on eGFR are obtained from Renbase® [65] and "pro.medicin.dk," a database containing information on national medication and treatment guidelines [66]. Medications are considered "renal risk medications" if dose adjustments are recommended at eGFR ≤90 mL/min/1.73 m2. Drug interactions are determined using the national database "interaktionsdatabasen.dk" [67]. Finally, each prescribed medication is assessed for appropriateness based on the indication for treatment, recommended dose, adverse drug reactions, therapeutic duplication, dosing interval, formulation and strength, drug interactions, contraindications, precautions, and specific participant characteristics. The clinical pharmacist documents any recommended changes to the participant's medication list in the electronic patient record. These recommendations are then reviewed by a geriatrician, who decides whether to accept, reject, or alter each recommendation in collaboration with the clinical pharmacist. Any medication changes made by the geriatrician are documented, in the electronic patient record and implemented in the ED, accepted but not implemented in the ED, communicated to a specialized hospital ward and/or the participant's GP, or rejected [36].
Multidisciplinary nutritional intervention (MULTI-NUT-MED intervention)
In addition to the MED intervention described above, the multidisciplinary nutritional intervention consists of an individualized multimodal and transitional intervention that includes dietary counseling, occupational therapy, physiotherapy, evaluation and treatment of depression, and an oral health-related intervention. The choice of intervention is based on screening tests performed during the baseline data collection (see Figs. 2 and 3).
Dietary counseling
Dietary counseling is provided both during hospitalization, by research dieticians, and after hospital discharge by community-based dieticians or by hospital-based research dieticians if community-based dieticians are not available. The goal of dietary counseling is to ensure that each participant receives a diet that covers the energy and protein requirements to either maintain their body weight (if BMI≥18.5) or gain body weight (if BMI <18.5). Both the content of the dietary counseling and the structure of the home visits after discharge are inspired by Lindegaard et al. [68, 69].
During hospitalization
Immediately after randomization, the research dietitian creates a dietary plan in collaboration with the participant for the participant to follow during hospitalization. This dietary plan is based on foods and nutritional products available at the hospital as well as the participant's nutritional needs [70], self-reported food preferences, and ability to chew (oral or dental pain and masticatory difficulties) and swallow (evaluated by the EAT-10 score [71, 72] and an occupational therapist).
Foods and nutritional products available at the hospital include a fixed menu in the ED or an a la carte menu in specialized wards, energy- and protein-enriched or texture-modified menus, oral nutritional supplements (ONS), and a selection of beverages and in-between meals. Participants in the MULTI-NUT-MED intervention may also receive P-Boost®(Adosan), a fluid protein-only supplement.
Daily dietary intake is recorded in a food diary by the participant and validated by the research dietician the following day. If a food diary is incomplete, then the research dietician performs a 24-h dietary recall [73]. Both dietary intake and dietary plans are entered in VITAKOST [74]. If 100% of energy and protein and energy requirements is not achieved on a given day, then the dietary plan is adjusted for the following day. If >75% of protein and energy requirements is not achieved for 2 days in a row, then tube feeding or parenteral nutrition is advised in collaboration with the medical doctor.
After discharge
Prior to discharge, a dietary plan for the first week after discharge is created based on the participant's food preferences, nutritional needs (evaluated by the Nordic Nutrition Recommendations [75] with an optional stress factor), ability to chew (pain in their mouth, difficulties chewing) and swallow (evaluated by the EAT-10 score [71, 72] and an occupational therapist), and limitations in grocery shopping, cooking or eating (evaluated by the Functional Recovery Score (FRS) [76]). If ONS is a part of the dietary plan after discharge, then the participant is provided with an ONS prescription, which can be filled at the pharmacy with a 60% price reduction. At discharge, the dietary plan is provided to both the participant and community-based dietician.
Participants are offered 1-h home visits by the community-based dietician at 1, 2, 4, and 8 weeks after discharge to evaluate changes in body weight and energy and protein intake and to adjust the dietary plan if needed. If a participant is readmitted within 16 weeks of discharge, they are offered dietary counseling during rehospitalization.
Occupational therapy—dysphagia
Participants with an EAT-10 score [71, 72] ≥3 at baseline are offered an evaluation by a hospital-based occupational therapist to identify the presence of dysphagia. If the participant is discharged prior to the hospital-based evaluation, then a community-based occupational therapist performs the evaluation after discharge.
If the initial evaluation of dysphagia reveals areas for potential treatment, then an intervention to improve and secure swallowing safety and efficiency is initiated. Both the evaluation and treatment are performed according to the principle of Facial Oral Tract Therapy (F.O.T.T.®) and follow prespecified algorithms [77]. Any required modifications to food and beverage consistency are coordinated with the research dietician during hospitalization and communicated to community-based staff performing the intervention after discharge. If any additional interventions for dysphagia are still required at the time of discharge, then the participant is offered home visits by a community-based occupational therapist as needed for 2 h per week for 16 weeks after discharge. All evaluation results and treatment plans are communicated to the community-based occupational therapist upon discharge. The intervention is terminated when an individualized goal of intervention is reached or after 16 weeks.
Occupational therapy—activities of daily living
Participants with a FRS [76] ≤2, at baseline, in one or more of the following categories: grocery shopping, cooking, or eating (not including dysphagia) are offered an intervention by a community-based occupational therapist starting within two weeks after discharge.
The choice of intervention is based on the Assessment of Motor and Process Skills (AMPS) [78], which evaluates the quality of performed activities of daily living (ADL) according to the degree of physical effort, efficiency, safety, and independence. Following this assessment, an appropriate activity-based intervention is planned by the occupational therapist in collaboration with the participant according to the principles of the Occupational Therapy Intervention Process Model (OTIPM) [79]. If there is potential to maintain or regain functional ability, then the participant is offered 1-h home visits by a community-based occupational therapist during the first 16 weeks after discharge for up to 7 home visits or until the goal of intervention is reached. In collaboration with the participant, the therapist sets the goal of maintaining or regaining functional ability in groceries shopping, cooking, and/or eating. If there is no potential to maintain or regain functional ability, then the intervention is terminated after the first home visit.
Participants who screen positive for low functional ability (i.e., FRS scores ≤2 in grocery shopping, cooking, or eating) are also evaluated for lower extremity strength during baseline data collection. Decreased muscle strength is defines defined as <5 repetitions on 30 s sit-to stand test [80, 81] or 5–8 repetitions on 30 s sit-to stand test in combination with a 4-m gait speed [82] below 0.6 m/s [81]. Participants with decreased muscle strength at baseline are re-evaluated at 2–3 weeks after discharge by a community-based physiotherapist. Participants who still have decreased muscle strength at this timepoint are offered two weekly training sessions [83] by a community-based physiotherapist for 16 weeks after discharge. The training sessions are approximately 1-h in duration and take place either in the participants home or at a training facility. The training is intended to improve the participant's ability to maintain independent ADL by combining exercises for strength, endurance, and balance [84]. The specific exercises include a progressive sit-to-stand exercise as reported by Pedersen et al. [85], a static balance exercise, where the participant pokes for the hands of the physiotherapist to train the participant's agility [86] by altering the base of support for 3 sets of 10–60 s, an up-and-down-from-floor exercise, a stair climbing exercise till fatigue or for a maximum of 10 min and a walking exercise, aiming to increase step counts by 10% each week [87], based on the walking capabilities of the participant. Participants with unsafe walking abilities will have supervised walking for 10 min with the physiotherapist. All exercises follow prespecified algorithms for training progression and are adjusted accordingly for each session. During the intervention, participants are also weighed once each week by the physiotherapist. If a participant has > 1 kg weight loss since the first training session, then training is paused, and a dietician provides dietary counseling until body weight is stabilized, at which point training is resumed.
Evaluation of depression and treatment
Participants are screened during baseline data collection for depression using the Mini Geriatric Depression score [88]. Participants with a Mini Geriatric depression score ≥2 are subsequently screened with the Geriatric Depression Score-15 (GDS-15) [89]. Participants with a GDS-15 ≥5 are offered evaluation and treatment for depression by a geriatrician during hospitalization. After discharge, the geriatrician can follow up on treatment by phone. If the participant is discharged before evaluation and treatment by the geriatrician, then they are recommended to see their GP.
Oral health-related intervention
Participants are screened during baseline data collection for oropharyngeal dysfunction. Participants who report oral pain, masticatory difficulties, and/or xerostomia (Summated Geriatric Xerostomia Inventory≥8) [90] are offered a clinical oral evaluation including diagnosis of potential oral and/or dental disease conditions by a research dentist. This evaluation includes an interview on oral symptoms and an evaluation of the dental, periodontal and oral mucosal status, the oral hygiene status, and functional occlusion as well as the function of dentures (partial or full, if present). In case of suspicion of oral candidiasis, an oral smear is performed, and antifungal treatment initiated if necessary. Overall, if dental treatment is required, the participant is advised to attend to their dentist. If the oral hygiene is insufficient and the participant displays signs of gingivitis and periodontitis and/or impaired salivary gland function, they are offered two home visits from a dental hygienist after discharge. This intervention includes instruction and motivation in order to improve the oral hygiene and thereby oral health. Participants with insufficient oral hygiene are also provided with an electrical toothbrush.
Training of staff performing the interventions
All clinical pharmacists are educated and certified by The Capital Region Pharmacy, Herlev, Denmark, to perform medication reconciliation and medication reviews. All clinical pharmacists are provided 1 h of instruction about the intervention by CT, AKB, or the primary investigator MBH. Additional instruction may be provided by MBH as needed during the trial.
Both hospital- and community-based dieticians are provided one hour of instruction about the intervention by the primary investigators, ALA, or RLN. This instruction reviews standardized procedures for data collection and dietary interventions and may be repeated if deemed necessary. Hospital-based dieticians are also provided supervised training in dietary interventions by ALA, RLN, or already trained dieticians until deemed ready to perform the intervention unsupervised. Additional instruction may be provided by ALA or RLN as needed during the trial.
Both hospital- and community-based occupational therapists and physiotherapists are provided 1 h of instruction about the intervention by primary investigators ALA or RLN. This instruction reviews standardized procedures for data collection and therapy interventions and may be repeated on an individual basis upon request.
Participant compliance is defined separately for each element of the intervention. Compliance to medication review is defined as having received a medication review that is evaluated and effectuated by a geriatrician. Compliance with dietary counseling is defined as having counseling during hospitalization and ≥3 home visits after discharge. Compliance with physiotherapy is defined as having received ≥75% of training sessions. Compliance with occupational therapy is defined as having received ≥75% of the home visits for dysphagia and ≥75% of home visits for ADL if deemed relevant by the occupational therapist. Compliance to evaluation and treatment of depression is defined as having received an evaluation by the geriatrician. Compliance with oral health-related intervention is defined as having received an evaluation by a dentist and ≥1 home visit by a dental hygienist if deemed relevant by the dentist.
Recruitment, data collection, and interventions are all performed either in the hospital (during hospitalization) or in the participant's home (after discharge). This strategy is performed to maximize patient recruitment, data collection, and compliance to the intervention while minimizing participant transportation costs and efforts. Adherence to the intervention is registered and evaluated but not monitored during the trial.
Trial outcomes as well as timepoints and collection methods for each outcome are shown in Table 2 and Fig. 3.
Sample size
The trial has three primary endpoints that build on mutually independent hypotheses [140]. Therefore, sample size calculations were performed for each endpoint as described below. All sample size calculations are performed for a significance level of 5%, power of 80%, and a dropout rate of 25%. Ethical approval was obtained for the inclusion of 200 participants in total to ensure enough power for all primary endpoints.
1: Based on a t test, a sample size of 120 is required to detect a clinical difference of 3 points (SD=5 points [36]) in MAI score change from baseline to 8 weeks after discharge between the control group and pooled intervention group (MED and MULTI-NUT-MED intervention).
2: Based on a paired t test, a sample size of 62 participants is required to detect a clinically relevant difference of 4.0 mL/min/1.73m2 (SD=15, a R=0.73 [141]) between mGFR and eGFR based on the combination of creatinine and cystatin C. GFR is measured at baseline for all trial participants regardless of group allocation.
3: Based on a t test, a sample size of 130 participants with or at risk of malnutrition is required to detect a clinically relevant difference of 0.15 points [142] (SD=0.27 [143]) in EuroQol-5D-5L score change from baseline to 16 weeks after discharge between the control group and MULTI-NUT-MED intervention group, assuming equal allocation in the two groups.
Given that patients are included independently of nutrition status and approximately 70% of patients are expected to have or be at risk of malnutrition [4], a total of 185 participants is required to achieve a sample size of 130 participants with or at risk of malnutrition.
Methods: assignment of interventions
Allocation sequence generation
Participants are randomly allocated to either the intervention group or control group in blocks of 8 and stratified by age (<75 or ≥75 years of age), sex, and municipality. A random 1:1 sequence of two letters was generated for each block, with the statistical software R 3.6.0 (R Foundation for Statistical Computing, Vienna, Austria) using the sampling function. The randomization sequence was generated by a statistician uninvolved in the trial, and who was unaware of which letter was assigned to which group.
Allocation concealment mechanisms and implementation
Allocation concealment is achieved as the person performing patient recruitment and data collection (blinded) does not have access to the randomization sequences and is not involved in the randomization. Persons not involved in recruitment will inform intervention staff and participants about group allocation, based upon the randomization sequence. The randomization is performed immediately after a participant has consented to participate and is based solely on stratification-relevant data. The staff performing the interventions (unblinded) are informed immediately after randomization. Participants are informed after baseline data has been collected.
The nature of the intervention does not allow blinding of participants or personnel performing the intervention. However, the outcome assessor is blinded to the result of the randomization throughout the trial, and all data analysis is performed blinded.
Methods: data collection, management, and analysis
Data collection methods
Depending on the outcome, data collection is performed at baseline (t1), 8 weeks after discharge (t2), 16 weeks after discharge (t3), 1 year after discharge (t1y), and at the GFR-measurement (tGFR) (Tables 1 and 2).
Data collection is performed by the same assessor whenever possible to minimize variation. All assessors are provided supervised training in data collection by primary investigator ALA, MBH, RLN, AKB, or HGJL until deemed ready to perform data collection unsupervised. Data are collected in the ED at baseline and in each participants' home during follow-up. If a participant declines full data collection at follow-up, then they are offered minimal data collection consisting of blood samples, body weight, MNA-SF, EuroQol-5D-5L, blood pressure, heart rate, hand grip strength, and body composition with BIA. If the participant declines minimal data collection, then they are offered to complete any components of data collection that can be performed by telephone interview. A full medication list for each participant is recorded at every follow-up visit, and the patient's diagnosis codes and laboratory tests are accessed in the patient chart and stored for future MAI and AOU scores assessment. A full medication list for each participant is recorded at every follow-up visit, and the patient's diagnosis codes and laboratory tests are accessed in the patient chart and stored for future calculation of MAI and AOU scores. A self-reported medication list is obtained by a senior pharmacist through interviewing the participant, and this list is cross-referenced with the Shared Medication Card. If there are any discrepancies between medications reported by the patient and those found in the Shared Medication Card, then the senior pharmacist confirms the medications by contacting the participant's relatives, home care personnel, or GP. Registry data (see Table 2) are obtained retrospectively.
Data management
Procedures for data entry, coding, security, and storage have been approved by the Danish Data Protection Agency (VD-2018-390). Whenever possible, data are entered directly into REDCap (Research Electronic Data Capture, Vanderbilt University, Nashville, USA). If data are collected on paper case report forms, then a double entry in REDCap is performed. Data analysis will be performed in SAS Enterprise Guide version 9.4 M5 (SAS Institute Inc., Gary, NC, USA) and R, Version 3.6.1 (R Foundation for Statistical Computing, Vienna, Austria).
Statistical methods
Primary outcomes
Differences in MAI score, change from baseline to 8 weeks after discharge between the control group and pooled intervention group (MED and MULTI-NUT-MED intervention), will be evaluated by analysis of covariance (ANCOVA). The primary analysis will model the randomization group and baseline MAI-score as independent variables by the intention-to-treat principle. Additional analyses will be adjusted for potential confounders that are unequally distributed between groups despite randomization. Missing data on the primary end point will be accounted for by multiple imputations using the PROC MI procedure with fully conditional specification (FCS) and a minimum of 100 imputations. Imputation will use earlier measurements of the imputed outcome, number of medications, and randomization group, along with age and sex for prediction models.
Differences between mGFR and eGFR based on both the combination of creatinine and cystatin C will be evaluated by mixed linear regression analysis.
The difference in EuroQol-5D-5L score change from baseline to 16 weeks after discharge between the control group and MULTI-NUT-MED intervention group will be evaluated by ANCOVA. The primary analysis will model randomization group and baseline EuroQol-5D-5L as independent variables with either intention-to-treat analysis or per-protocol analysis, where participants are considered compliant if they received and were compliant to at least one intervention if one was recommended, two if two were recommended, two if three were recommended, three if four were recommended, and four if five or six were recommended. Additional analyses will be adjusted for potential confounders that are unequally distributed between groups despite randomization. Missing data on the primary endpoint will be accounted for by multiple imputations using the PROC MI procedure with fully conditional specification (FCS) and a minimum of 100 imputations. Imputation will use earlier measurements of the imputed outcome along with age, sex, and diagnosis codes for prediction models.
Secondary outcomes
The difference in health care costs between the control group and MULTI-NUT-MED intervention group will be evaluated in two stages. In the first stage, the share of participants having zero costs is compared by t test or similar. In the second stage, the magnitude of strictly positive health care costs is compared by generalized linear models [144]. Quality-adjusted life-years (QALYs) will be computed based on survival, EuroQol-5D-5L data collection, and Danish preference weights [145]. Incremental cost-effectiveness ratio (ICER) will be computed by dividing the difference in development in health care costs from inclusion to 52 weeks after inclusion between groups with the difference in change in QALYs between groups. The ICERs will be bootstrapped and reported with confidence limits from the bootstrapping, in scatter plots, and in cost-effectiveness acceptability curves.
The difference in AOU score change from baseline to 8 weeks after discharge between the control group and pooled intervention group (MED or MULTI-NUT-MED intervention) will be evaluated similarly to the difference in MAI score change.
DNA sequencing of fecal bacteria will be mapped to an integrated catalog of reference genes of the human gut microbiome in order to generate an operational taxonomic unit. Microbial species and gene diversity (the gut microbiome composition) will be calculated with the Shannon index. Differences in the Shannon index between the control group and intervention group will be evaluated by ANCOVA adjusted for baseline values. Gut microbiome diversity will be evaluated by descriptive analyses in relation to dietary components and nutritional status evaluated by MNA-SF and Global Leadership Initiative on Malnutrition (GLIM) criteria.
GLIM criteria will be validated against in-depth nutritional assessments performed independently by two blinded and trained nutritional experts (semi-gold standard). The nutritional assessment will include factors related to nutritional status, e.g., dietary intake, factors impeding nutritional intake, appetite, and disease history including LOS and readmissions, body composition, weight history, biochemistry, and physical and psychological wellbeing. The prevalence of malnutrition will be evaluated with descriptive analyses based on specific combinations of phenotypic and etiologic indicators in the GLIM criteria. Finally, statistical agreement analysis between the three malnutrition classifications (MNA-SF, ESPEN, and GLIM) will be evaluated by agreement analysis at admission and up to 16 weeks after discharge. Based on in-depth nutritional assessments, participants only meeting one or two malnutrition classifications will be compared to participants meeting all three malnutrition classifications.
The association between non-GFR determinants and differences between mGFR and eGFR will be evaluated by linear regression analysis. Overall agreement between chronic kidney disease classification based on mGFR and eGFR will be evaluated by Kappa statistics. Results of pharmacogenetic testing including frequency of gene variations and medication interventions based on these variations will be evaluated by descriptive statistics.
Prevalence of frailty will be calculated at baseline and follow-up using three different screening tools (FRAIL, Fried's frailty phenotype, and FI-OutRef). The effect of the intervention on change in frailty between the baseline and follow-up will be evaluated by mixed models with frailty as the dependent variable and a random effect on participant number, to account for multiple measurements from the same participant. The effect will be measured as an interaction of group and time. Depending on the goodness of fit it may be necessary to categorize frailty. Overall agreement between frailty classification based on the different screening tools will be evaluated by Kappa statistics and mixed models. If the intervention is determined to have a significant effect on frailty, then the agreement between frailty classifications will only be performed using baseline data.
All additional confirmative outcomes will be evaluated by t test, Kruskal-Wallis test, chi-square test, two proportions z test, or Friedman's analysis of variance depending on the distribution of the relevant variable. The analysis will be adjusted for multiple testing. Associations between variables will be evaluated by adjusted multiple regression models, and repeated measurements will be evaluated by mixed models of paired t tests or Fisher's exact test. Missing data on secondary endpoints will be accounted for with multiple imputations as previously described.
Data monitoring, harms, and auditing
The trial is regarded as low-risk and designed by a highly experienced multidisciplinary research team. Interventions are based on well-established recommendations why no adverse events are expected. Therefore, establishing a data monitoring committee was considered unnecessary and no interim analyses will be performed. However, all adverse event will be registered, and appropriate actions will be taken for all participants regardless of group allocation. Participant and persons responsible for data collection are instructed to contact the participant's GP or study geriatrician if symptoms or conditions arise that may be related to the MED intervention or severely inappropriate medications. Participants are encouraged to raise trial related questions to trial staff and to report all events related to the trial. A physician will evaluate any abnormal blood test results collected for the trial. Participants receiving physiotherapy are monitored for unintentional weight loss. Missing or inaccurate data will be audited daily by trial staff, and the research team will have bimonthly progress meetings to confirm progress and ensure scientific quality.
The trial has several strengths and limitations. The major strength of the trial is its randomized controlled study design. The control group allows identification of possible effects of the intervention that are beyond a patients' normal capacity to recover, which is known to be high in acutely admitted older patients [146]. Another strength of the trial is that the intervention is performed in the same setting where it is designed to be implemented. A third strength of the trial is the use of 99mTc-DTPA plasma clearance for determining mGFR, which is accepted as the gold standard in clinical settings. However, many equations to estimated GFR are developed using Inulin (plasma or urinary) clearance as a reference. Quality of life has a broad definition, and many tools to measure different aspects of quality of life exist. The strength in using EuroQol-5D-5L is that it comprises both the physical and mental aspects of the quality of life and is widely used in nutrition research and that it can be used in health economic evaluations.
A limitation to the trial design is the lack of double-blinding, which may introduce performance bias. However, double-blinding is not possible due to the nature of the intervention. Another limitation is the discrepancy in staff attention required for the control group and intervention group. Participants receiving the MULTI-NUT-MED intervention, for example, will likely require more interpersonal interaction, which may bias the results of the trial. A third limitation is that several components of the MULTI-NUT-MED intervention are based primarily on self-reported questionnaires, which most likely leads to the underutilization of the intervention.
In conclusion, this trial will provide new information on strategies for optimizing treatment of inappropriate medication prescribing and malnutrition and provide new knowledge regarding the accuracy of eGFR among older medical patients admitted to the ED.
Availability of data and materials
The handling of personal information complies with the Danish regulations and EU´s General Data Protection Regulation (GDPR). The project has been listed with the legal office of the Capital Region. ALA, MBH, RLN, LMJ, AKB, HGJ-L, EI, and OA will have access to the final trial dataset. Due to regulations from the Danish Data Protection Act and GDPR, the dataset from our trial is not publicly available as the data contain identifying or sensitive information that could compromise the privacy of the participants. By reasonable request to the corresponding author, the dataset can possibly be made available.
Activities of daily living
Assessment of motor and process skills
Analysis of covariance
Assessment of underutilization
Bioelectric impedance analysis
Beta trace protein
Body mass index
De Mortons Mobility Index
Deoxyribonucleic acid
Dual X-ray absorptiometry
Eating Assessment Tool
Emergency department
- eGFR:
Estimated glomerular filtration rate
European Society of Clinical Nutrition and Metabolism
- EuroQol-5D-5L:
EuroQol-5 dimensions-5 levels
Fully conditional specification
Facial oral tract therapy
Functional Recovery Score
Geriatric Depression Score
Glomerular filtration rate
Global Leadership Initiative on Malnutrition
General practitioner
Incremental cost-effectiveness ratio
Length of stay
Medication Appropriateness Index
- MED intervention:
Medication review intervention
- mGFR:
Measured glomerular filtration rate
Mini Nutritional Assessment–Short Form
- MULTI-NUT-MED intervention:
Individualized multimodal and transitional nutritional intervention
Oral nutritional supplements
Occupational Therapy Intervention Process Model
Potentially inappropriate medication
- REDCap:
Research electronic data capture
Standard deviation
Standard Protocol Items: Recommendations for International Trials
Visual analog scale
Quality-adjusted life year
- 99mTC-DTPA:
99mTechnetium–diethylenetriaminepentaacetic acid
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The authors would like to acknowledge the staff at Copenhagen University Hospital, Hvidovre, and collaborators in the municipalities, for their valuable inputs during the design of this study
Ancillary and post-trial care
Upon inclusion, participants and if relevant their relatives are given contact information on trial managers and are asked to contact us if any trial-related health problem should arise. In such events, the participant is referred to our geriatrician or their general practitioner. Participants who have had a pharmacogenetic test are offered to have the test result after the 16-week follow-up.
Dissemination policy
The findings of this trial will be disseminated in peer-reviewed journals and presented at national and international conferences.
. We also thank Lona Christrup for her valuable inputs on the part concerning pharmacogenetic testing.
Trial status
Protocol version 6, Issue date: 29 October 2020, protocol amendment 6. The trail recruitment began in October 2018 and is still recruiting. Recruitment is expected to be complete in June 2021.
Protocol amendments
The following protocol amendments have all been approved by The Danish Regional Ethics Committee of the Capital Region and have been registered at ClinicalTrials.gov.
Amendment number 1: 26th of October (2018). The primary reason for amendment: change of radioactive tracer to measure glomerular filtration rate from 51Chromium-Ethylen Diamine Tetra Acetate to 99mTc-DTPA.
Amendment number 2: 14th of April (2019). The primary reason for amendment: gut microbiome was added as an outcome in participants with a MNA-SF score ≤11. EuroQOL-5D was added as an outcome 1 year after discharge.
Amendment number 3: 16th of May (2019). The primary reason for amendment: increase of the power for analysis of kidney function estimates by increasing the number of participants who have measured their GFR from n = 64 up to n = 200.
Amendment number 4: 25th of September (2019). The primary reason for amendment: urine samples, DXA, and BIA measurements were added as outcomes.
Amendment number 5: 28th of November (2019). The primary reason for amendment: BIA measurement was added as an outcome.
Amendment number 6: 29th of October (2020). The primary reason for amendment: discontinuation of data collection of pharmacogenetic testing from ID127. Permission to compare genome- and phenotyping between different laboratory tests related to the genes: CYP2D6, CYP2C19, CYP2C9, SLCO1B1, and VKOR.
This work is supported financially by The Capital Region's strategic funds (2,000,000 DKK); Capital Region's fund for transitional research (2,011,807 DKK); Danish Regions (1,000,000 DKK); The Danish Research Unit for Hospital Pharmacy, Amgros I/S, Copenhagen (1,000,000 DKK)), Denmark; and the Læge Sofus Carl Emil Friis og Hustru Olga Doris Friis' Legat (190,000 DKK). These funders had no role in the design of this study and will not have any role during its execution, analyses, interpretation of the data, or decision to submit results. Furthermore, the work is supported by: The Capital Region Pharmacy, Denmark (staff time from pharmacists to perform the intervention). The trial sponsor is the Copenhagen University Hospital, Amager, and Hvidovre, Denmark. Contact name: Ove Andersen; Address: Kettegaard Allé 30, Hvidovre, 2730, Denmark; Email: firstname.lastname@example.com; Telephone +45 38 62 38 62.
Author information
Authors and Affiliations
ALA, MBH, CT, LMJ, MMP, MZA, AMB, JP, and OA drafted the original idea for the trial and initiated the trial design. RLN, MD, AKB, HGJL, LBL, EI, MK, AMLP, and MH later contributed to the trial design process. ALA and MBH drafted the trial protocol, and all other authors contributed to and approved the final version of the protocol. OA is the main grant holder and responsible for the completion of the trial. ALA, MBH, and RLN are the trial managers and principal investigators responsible for daily operation, coordination between trial collaborators, outcome assessment of patients, collection and structuring of data, ensuring compliance with milestones, and completion of the trial. ALA, MBH, RLN, AKB, and HGJL will conduct training of the study personnel in testing procedures. The authors read and approved the final manuscript.
Corresponding author
Ethics declarations
Ethics approval and consent to participate
The trial follows the Helsinki declaration and has been approved by relevant Danish authorities, see Table 1s. Patients receive oral and written information regarding the trial, and only patients who have given oral and written consent will be included.
Consent for publication
Not applicable.
Competing interests
The authors declare that they have no competing interests.
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Supplementary Information
Additional file 1.
Informed consent. SPIRIT-Guideline checklist.
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Cite this article
Andersen, A.L., Houlind, M.B., Nielsen, R.L. et al. Optimization of Nutrition And Medication (OptiNAM) for acutely admitted older patients: protocol for a randomized single-blinded controlled trial. Trials 22, 616 (2021). https://doi.org/10.1186/s13063-021-05456-6
DOI: https://doi.org/10.1186/s13063-021-05456-6


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On Saturday, May 22, 2021, the following systems will be upgraded and therefore unavailable:
- 12:01 a.m. – 12:30 a.m. – Internet for Springfield, West Plains and Mountain Grove campuses will be unavailable.
- 10:30 a.m. – 4:00 p.m. – Maintenance will be performed on the Uninterruptable Power Supply (UPS) that powers all servers in the Cheek Hall Computing Center. Users of the network and computing resources are encouraged to plan accordingly and not depend on uninterrupted services.
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The new Job Opportunities and Basic Skills Training Program was instituted to provide education, training, and employment for adults receiving Aid to Families with Dependent Children. This study uses job placement rates for AFDC recipients trained through Job Training Partnership Act programs to gauge the difficulty participants in the new program may have in finding jobs. The results indicate that, at minimum, there would have been 56 percent more participants in the new JOBS program than there were in Job Training Partnership Act programs had the JOBS program started in the 1986 program year. Only about 60 percent of the AFDC recipients in JTPA-training programs obtained jobs, suggesting that the larger number of JOBS participants also would have had difficulty finding jobs. Estimates of job vacancies and competition from the unemployed also indicate that JOBS participants would face stiff competition for employment, particularly in Southern and nonmetro states. Lack of training facilities and employment opportunities in many rural areas may make it necessary for AFDC recipients in those areas to move if they want to participate in the new program.
Recommended Citation
Ghelfi, Linda. 1992. "Job Placement of JTPA-Trained Welfare Recipients: Implications for the JOBS Program in Southern and Nonmetro States." Journal of Rural Social Sciences, 09(1): Article 6. Available at: https://egrove.olemiss.edu/jrss/vol09/iss1/6
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