The structure of the OARS physical health measures

This article proposes and evaluates two models for integrating self-reported health status measures for the elderly with dominant conceptualizations of physical health. Each model includes three dimensions of physical health: chronic illness, functional limitation, and self-rated health. In Model 1, the dimensions are linked in a causal framework, whereas in Model 2, a second-order factor, labeled physical health status, is hypothesized to account for the relationships among the three dimensions. Each model was tested with data gathered in Cleveland (N = 1,834) and Virginia (N = 2,146) using the Older Americans Resources and Services Multidimensional Functional Assessment Questionnaire (OARS MFAQ). Analyses were further replicated by randomly dividing each sample. Both models fit the data well; their utilities will depend on the way in which physical health is conceptualized and on the nature of the research question at hand.