The validity and reliability of the Turkish version of the MacNew Heart Disease Questionnaire in patients with angina

Health-related quality of life (HRQL) is an important patient-reported outcome when identifying the effects of the angina and evaluating the efficacy of treatment. The aim of this study was to determine the reliability and validity of the Turkish version of the MacNew Heart Disease HRQL Questionnaire (MacNew) in patients with angina. The Short Form SF-36, the MacNew, and the Hospital Anxiety and Depression Scale were completed by the 125 patients in first 2-3 days after admission to the coronary care unit. Internal consistency reliability (Cronbach's alpha) and reproducibility (intraclass correlation coefficients, ICC) of the MacNew were assessed, and test-retest reproducibility was evaluated over a 2-month period in 25 clinically stable patients. The original three-factor structure for the Turkish MacNew was confirmed, with construct validity only partially confirmed; reliability statistics show that Cronbach's alpha exceeded 0.80 and the ICC exceeded 0.60 for all MacNew scales. Discriminative validity of the MacNew was confirmed. The MacNew appears to be reliable and valid in Turkish patients with angina.