Test-retest Reliability of the Yonsei Lifestyle Profile (YLP) for Older Adults
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Objective : Lifestyle is one of the vital determinants for health and quality of life for older adults. This study aimed to assess the psychometric properties of the Yonsei Lifestyle Profile (YLP) in community-dwelling older adults. Methods : The instrument psychometric properties were assessed in a sample of community-dwelling older adults in South Korea. A total of 156 older adults completed the YLP. Internal consistency was analyzed using Cronbach’s alpha (α) reliability coefficient. Test-retest reliability using an Intraclass Correlation Coefficient (ICC) was assessed based on scores attained two weeks apart. Results : Sixty items were developed based on the comprehensive literature review and Delphi studies. The total scale of the YLP was .83, which reflects high internal reliability. The alpha values of the YLP subscales ranged from .80 to .74 for all participants. Regarding the test-retest reliability, the ICC was .97 for the total scores of the YLP, ranging from poor to good (.47~.99) for the YLP subscales. Thus, it was confirmed that the YLP has adequate test-retest reliability statistics. Conclusions : The YLP developed to measure the multidimensional lifestyle factors of older adults is a valid instrument to apply in community-dwelling older adults. The YLP questionnaire can be used in clinical practice when health-care practitioners evaluate their client’s lifestyle.
Abstract
Objective : Lifestyle is one of the vital determinants for health and quality of life for older adults. This study aimed to assess the psychometric properties of the Yonsei Lifestyle Profile (YLP) in community-dwelling older adults. Methods : The instrument psychometric properties were assessed in a sample of community-dwelling older adults in South Korea. A total of 156 older adults completed the YLP. Internal consistency was analyzed using Cronbach’s alpha (α) reliability coefficient. Test-retest reliability using an Intraclass Correlation Coefficient (ICC) was assessed based on scores attained two weeks apart. Results : Sixty items were developed based on the comprehensive literature review and Delphi studies. The total scale of the YLP was .83, which reflects high internal reliability. The alpha values of the YLP subscales ranged from .80 to .74 for all participants. Regarding the test-retest reliability, the ICC was .97 for the total scores of the YLP, ranging from poor to good (.47~.99) for the YLP subscales. Thus, it was confirmed that the YLP has adequate test-retest reliability statistics. Conclusions : The YLP developed to measure the multidimensional lifestyle factors of older adults is a valid instrument to apply in community-dwelling older adults. The YLP questionnaire can be used in clinical practice when health-care practitioners evaluate their client’s lifestyle.