Shelida Silva Sousa, Poliana dos Santos Oliveira, Fagner dos Santos Oliveira, Maria Aline Gonçalves de Holanda, Paulo César de Almeida, Ana Larissa Gomes Machado 2020. Study of sociodemographic factors associated with functional dependence in the elderly . Rev Enferm UFPI. 2, 1 (set. 2020).