[The effect of chronic diseases on functional status of the elderly living in the city of São Paulo, Brazil]. / A influência das doenças crônicas na capacidade funcional dos idosos do Município de São Paulo, Brasil.

The main focus of this study was the effect of chronic disease (hypertension, diabetes mellitus, heart disease, lung disease, cancer, and arthropathy) on the functional status (activities of daily living - ADL, instrumental activities of daily living - IADL) among the elderly, controlling for age, gender, living arrangements, education, and comorbidity. The analysis was based on information provided by the SABE Project, from the city of São Paulo, Brazil, including individuals 60 years of age and over (n = 1,769), from January 2000 to March 2001. A multinomial logistic regression model was used. Compared to the absence of dependency category, heart disease (OR = 1.82), arthropathy (OR = 1.59), lung disease (OR = 1.50), and hypertension (OR = 1.39) were the main diseases that affected the IADL dependency category. Lung disease (OR = 2.58), arthropathy (OR = 2.27), hypertension (OR = 2.13), and heart disease (OR = 2.10) had important impact on the IADL and ADL dependency categories. The results were statistically significant (p < 0.05).