Psychometric Properties of Patient-Reported Outcome Measures Assessing Self-Efficacy in Patients with Chronic Obstructive Pulmonary Disease (COPD): A Systematic Review

This systematic review aimed to synthesize the evidence of the psychometric properties of self-efficacy patient-reported outcome measures (PROMs) in patients with chronic obstructive pulmonary disease (COPD). We conducted a systematic search of MEDLINE and other common databases from inception until September 2020. Studies that reported psychometric properties of self-efficacy outcome measures in COPD patients were included. We used the Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN) 2018 guidelines for data extraction and evidence synthesis. Eighteen studies that assessed nine self-efficacy PROMs were eligible for inclusion. The assessment of structural validity indicated sufficient results rating for the Exercise Self-Regulatory Efficacy Scale and the Self-Care-Self-Efficacy Scale, and insufficient rating for the COPD Self-Efficacy Scale and the Pulmonary Rehabilitation Adaptation Index for Self-Efficacy (PRAISE). Construct validity measures displayed sufficient results rating with correlations ranging from -0.48 to - 0.71 between self-efficacy PROMs and other PROMs such as St. George's Respiratory Questionnaire, Hospital Anxiety and Depression Scale and Chronic Respiratory Questionnaire. Internal consistency measures indicated sufficient rating for all self-efficacy PROMs with a Cronbach's alpha range of 0.71 - 0.98. Responsiveness was assessed for the PRAISE with an overall sufficient rating (effect sizes of 0.21 - 0.37). The evidence regarding the psychometric properties of self-efficacy PROMs in COPD is variable. The PRAISE is responsive to changes in self-efficacy in COPD patients attending a pulmonary rehabilitation program. When using self-efficacy PROMs in clinical practice or research, clinicians and researchers should consider the psychometric properties and choose the appropriate outcome measure based on the purpose.

Automated summary

The evidence on the psychometric properties of self-efficacy patient-reported outcome measures (PROMs) in COPD patients varies. The PRAISE is responsive to changes in self-efficacy in COPD patients attending a pulmonary rehabilitation program. Clinicians and researchers should consider psychometric properties and choose outcome measures appropriately for clinical practice or research.