Article

The purpose of this study was to examine the concurrent validity of the Late Life Function and Disability Instrument (LLFDI) in patients with
coronary heart disease (CHD) and to evaluate the accuracy of information obtained through self-report questionnaire versus interview formats. Methods:
The study included 29 patients older than 60 years attending an outpatient cardiac rehabilitation program. Participants completed the LLFDI, three additional selfreport
criterion measures, and six performance-based tests; they completed the LLFDI a second time via interview. We used descriptive statistics, correlations,
and t-tests to analyze the data. Results: All LLFDI components were correlated ( r s ? 0.36­0.83) with the self-report criterion measures. The Function
Component of the LLFDI was moderately correlated with the 6-Minute Walk Test (r ? 0.62), timed up-and-go (r ? 0.58), walking speed (r ? 0.57),
and timed sit-to-stand ( r ? 0.56) scores. The LLFDI demonstrated a ceiling effect (10%) only in the Disability Limitation component. All LLFDI component
scores obtained via self-report questionnaire were correlated with scores obtained via interview; except in a single subcategory, there was no difference
between LLFDI scores obtained through self-report questionnaire and those obtained through interview. Conclusions: Results indicate that the LLFDI has
appropriate validity for older patients (>60 years) with CHD and can be completed independently by patients rather than administered by clinicians.

Langue : ANGLAIS