Ee. Chapleski et al., MORBIDITY AND COMORBIDITY AMONG GREAT-LAKES AMERICAN-INDIANS - PREDICTORS OF FUNCTIONAL ABILITY, The Gerontologist, 37(5), 1997, pp. 588-597
This article explores patterns of morbidity and comorbidity and their
ability to predict functional disability among American Indian elders,
using data from a sample of urban, rural off-reservation, and reserva
tion Great Lakes American Indians age 55 and older. Higher rates are r
eported of a number of chronic illnesses than found in overall samples
of U.S. elders. Results of multiple regression analyses predicting In
strumental Activities of Daily Living (IADLs) and Activities of Daily
Living (ADLs) show age to be a consistent predictor of functional disa
bilities: The CMI (Index of Comorbidity) was found to be a more useful
predictor of functional disability than was the simple summation of t
he number of chronic illnesses.