Psychometric properties of the Yonsei Lifestyle Profile‐BREF of community‐dwelling older adults

Abstract

AbstractBackgroundLifestyle is important indicator of health and well‐being among older adults. Therefore it is important to measure the individual’s lifestyles effectively. This study aimed to examine the validity and reliability of the Yonsei Lifestyle Profile‐BREF (YLP‐BREF).MethodIn total, 569 community‐dwelling older adults were recruited via an online survey. Confirmatory factor analysis of a one‐factor model was conducted for each of the three domainsof the YLP‐BREF. The total score of YLP‐BREF and each domain were evaluated for convergent validity and divergent validity using the WHO quality of life scale and center for epidemiologic studies depression scale. Additionally, Cronbach’s alpha reliability was examined. Finally, an optimal cutoff score for the YLP‐BREF was established using receiver operating characteristic curve analysis.ResultThe five items of physical activity demonstrated an acceptable fit (CFI = 0.962; TLI = 0.923; RMSEA = 0.095; SRMSR = 0.033). The four items of activity participation illustrated an acceptable fit except for the Tucker–Lewis index (CFI = 0.959, TLI = 0.876, RMSEA = 0.080, SRMSR = 0.022). All 13 nutrition items showed an acceptable fit fit (CFI = 0.927; TLI = 0.913; RMSEA = 0.076; SRMSR = 0.047). Cronbach’s alpha reliability was good for nutrition (r = 0.85) and acceptable for physical activity (r = 0.61), but insufficient for activity participation (r = 0.43). Convergent and divergent validities were good (r = 0.17–0.32, p<0.001; r = 0.01—0.10, p<0.001). The optimal cut‐off score for the YLP‐BREF was 9 for physical activity, 6 for activity participation, and 28 for nutritionConclusionThe YLP‐BREF is a reliable and valid self‐report questionnaire for measuring multifaceted lifestyle factors in community‐dwelling older adults in South Korea.