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New York Heart Association class assessment by cardiologists and outpatients with congenital cardiac disease: a head-to-head comparison of three patient-based versions

Abstract Background The objective of this study was to compare three patient-based New York Heart Association assessments with cardiologist assessments in outpatients with congenital cardiac disease. Methods Consecutive adult outpatients completed three questionnaires in a random order: a patient-based translation of the New York Heart Association classes, a self-constructed questionnaire based on the New York Heart Association classes, and the Specific Activity Scale. The treating cardiologist assessed the New York Heart Association class on the same day. Patient–cardiologist agreement was assessed by calculating percent agreement and weighted kappa. We also explored the level of agreement for patients without co-morbidity. Results In all, 86 adults – with a median age of 35.8 years – including 46 women participated. An agreement of 75.6% (weighted kappa is 0.43; probability is smaller than 0.01), 70.6% (weighted kappa is 0.44; probability is smaller than 0.01), and 74.4% (weighted kappa is 0.28; probability is smaller than 0.01) was found between the cardiologist assessment and the patient-based translation, self-constructed questionnaire, and the Specific Activity Scale, respectively. The patient-based translation equally over- and underestimated the New York Heart Association class, whereas the self-constructed questionnaire overestimated and the Specific Activity Scale underestimated the New York Heart Association class. Agreement levels for patients without co-morbidity were higher than agreement levels for the total group. Conclusion The patient-based translation yielded adequate agreement with cardiologist-assessed New York Heart Association class, showed equal over- and underestimation, and was easy to complete. The patient-based translation with the instruction to only consider functional impairments caused by the congenital cardiac defect is recommended in future studies of outpatients with congenital cardiac disease.