Longitudinal Association of Fall risk for Community Dwelling Elderly with and without ADRD
Abstract Falls amongst elderly with ADRD and are a major cause of functional impairment and increased mortality. The primary purpose of this study was to examine if fall status of community dwelling elderly residents with and without ADRD differs over a four year period and additionally does receipt of rehabilitation in any year modifies this association. National Health and Aging Trends Study (NHATS) data from 2015-2018 was used and sample consisted of participants age 65 and older who were community dwellers. Baseline characteristics of individuals in ADRD (n= 264) and non-ADRD group (n=2,971) was compared using chi square statistic. A generalized estimating equation model (multivariate logistic regression) was used to estimate odds ratio of falls in the two groups, adjusted for sociodemographic and clinical conditions that are predictors of fall risk. At baseline, ADRD group comprised of older, frail individuals who reported increased use of assistive device (AD) and presence of depression. Those in the non-ADRD group at baseline had significantly decreased odds for falls however no statistically significant change was observed for fall status over four years in the two groups (non-ADRD vs ADRD) and this association was not modified by receipt of rehabilitation. Those who used AD, had depression and received rehabilitation had increased odds for falls however no differences were found for those who lived alone and were frail. Future studies should examine the bi-directional interplay between falls and rehabilitation in elderly with ADRD with inclusion of other predictors of fall risk to study their unique characteristics.