Association between built environment and the incidence of disability in basic and instrumental activities of daily living in the older adults: Results of a cohort study in southern Brazil

The aim of this study was to evaluate the association between subjective and objective characteristics of the built environment and the incidence of disability in the activities of daily living in the older adults. A cohort study was conducted with 1196 older adults from Florianopolis, Santa Catarina, Brazil. Incidences were evaluated after four years by the difficulty or inability to perform six basic and nine instrumental activities. The subjective built environment was evaluated by the adapted Neighborhood Environment Walkability Scale and the objective for variables related to the characteristics of streets, sidewalks and land uses in the census tracts. Multilevel Logistic Regression analyzes were performed, where significant positive associations were observed between the presence of hills, and negative associations between safety for walking at night, a high proportion of commercial area, intermediate mixed land use and the incidence of disability in basic activities. The built environment characteristics associated with disability point to the need for improvements in urban infrastructure to promote functional independence in the older adults.