A Tool to Assess Participation in People With COPD Validation of the Late Life Disability Instrument

BACKGROUND: Participation in life roles is a critical patient-centered health outcome associated with morbidity and mortality in older adults, but it is not measured routinely in people with COPD. We aimed to validate a participation measure, the Late Life Disability Instrument (LLDI), in people with COPD. RESEARCH QUESTION: To what extent does the LLDI demonstrate test-retest measurement error and reliability, internal consistency, construct …