Validity and reliability of the Turkish version of the EmPHasis-10 questionnaire in patients with pulmonary hypertension

Abstract

Rationale, aims, and objectives The aim of the study was to evaluate the reliability and validity of the Turkish version of the EmPHasis-10 questionnaire to ensure cultural adaptation. Methods This study involved translation, back translation, and cross-cultural adaptation. One hundred and one patients who were diagnosed as having pulmonary hypertension (PH) for at least 6 months were evaluated using the Turkish version of EmPHasis-10. Turkish version of the Minnesota Living with Heart Failure Questionnaire (MLHFQ) was used as gold standard to assess the validation of the Turkish version of the EmPHasis-10 questionnaire. Relationship between MLHFQ and EmPHasis-10 was analysed using Spearman correlation analysis to assess the validation. Cronbach alpha (internal consistency) and exploratory factor analyses were used to assess the questionnaire's reliability. Results The statistical analysis showed that the EmPHasis-10 questionnaire showed a high validity with MLHFQ (r = 0.85) (P = 0.001). Reliability analysis showed that EmPHasis-10 had a high level of Cronbach alpha (alpha = 0.98) and internal consistency (ICC = 0.97). Conclusions The Turkish version of EmPHasis-10 is a quality of life questionnaire specific to PH. It has a high-level validity and reliability questionnaire that can be used by researchers and physicians.