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Usefulness of a new JACS questionnaire in assessing the influence of inhalation guidance on asthma control level; comparison of 4 different devices of ICS/LABA

Background: We developed JACS questionnaire to enable multi-faceted evaluation of asthma control level based on the four subscales of symptoms, treatment, activity, and emotion (Allergol Int, 2018, 131-137), but the evidence for the therapeutic effect using the JACS is lacking. We examined the influence of inhalation guidance on control levels in asthmatic patients treated with ICS/LABA using the JACS. Method: Uncontrolled asthmatic patients despite ICS/LABA treatment received inhalation guidance at Week 0. At Week 4, improvement in inhalation technique, scores of JACS total/sub, Mini AQLQ total/sub, ACQ6, and lung functions were evaluated. Results: In a total of 127 cases (average 55 years), the inhalation technique, FEV1, %FEV1, and JACS scores significantly (p Conclusion: Inhalation guidance before step-up is considered important for the treatment of patients with uncontrolled asthma. The JACS questionnaire was expected to be useful as a new index of not only asthma control level evaluation but also assessment of inhalation technique.