Pulmonary rehabilitation adapted index of self-efficacy (PRAISE) validated to Portuguese respiratory patients

Abstract

Introduction and Objectives - Recent updates on Pulmonary Rehabilitation highlight the importance of patients’ self-efficacy on long-term adherence to health-enhancing behaviors. The Pulmonary Rehabilitation Adapted Index of Self-Efficacy (PRAISE) is an adaptation of the General Self-Efficacy Scale. This study aimed to translate, culturally adapt and evaluate the reliability and validity of PRAISE in Portuguese respiratory patients. Patients or Materials and Methods - Forward-backward translation and pilot testing were performed. Content validity was assessed by a multidisciplinary panel of expert judges. To evaluate reliability and validity, 150 respiratory outpatients on Pulmonary Rehabilitation participated in a cross-sectional study. Descriptive and reliability analyses and exploratory factorial analysis using principal axis factoring, followed by oblique oblimin factor rotation were conducted to identify construct validity. IBM® SPSS® version 22 was used to perform statistical analysis. Results - 150 patients with a mean age of 67 years, 54% male and 83% currently on Pulmonary Rehabilitation participated in the study. These included mainly Chronic Obstructive Pulmonary Disease patients (46.7%) but also Bronchiectasis (20%), Interstitial Lung Disease (20%) and other respiratory diseases. PRAISE's mean score was 49. Exploratory factor analysis extraction provided a 4-factor solution that cumulatively explained 52.3% of total variance (F1: 26.6%; F2: 9.7%; F3: 8.7%; F4: 7.3%). Portuguese PRAISE showed the reliability of 0.78 (Chronbach alpha). Conclusions - The Portuguese version of PRAISE showed adequate psychometric properties for it to be used as an instrument to measure self-efficacy as a patient-centered outcome on Pulmonary Rehabilitation.