American Journal of Public Health, Vol 90, Issue 1 103-108, Copyright © 2000 by American Public Health Association
Physician-evaluated and self-reported morbidity for predicting disability
KF Ferraro and YP Su
Department of Sociology, Purdue University, West Lafayette, Ind. 47907-1365, USA. ferraro@purdue.edu
OBJECTIVES: This study compared the predictive validity of
physician-evaluated morbidity and self-reported morbidity on disability
among adults. METHODS: Subjects from a large national survey (n = 6913)
received a detailed medical examination by a physician and were asked about
the presence of 36 health conditions at baseline. Disability measured 10
and 15 years later was regressed on the morbidity measures and covariates
with tobit models. RESULTS: Although physician-evaluated morbidity and
self-reported morbidity were associated with greater disability,
self-reports of chronic nonserious illnesses manifested greater predictive
validity. Disability was also higher for obese subjects and those of lower
socioeconomic status. CONCLUSIONS: The findings demonstrate the predictive
utility of self-reported morbidity measures on functional disability.