These data were confirmed by studies undertaken by the Brazilian Institute of Geography and Statistics IBGE in the Brazilian Northeast, in which high rates of illiteracy were observed among older adults.
Esos datos son confirmados por investigaciones realizadas por el IBGE en el noreste de Brasil, en el cual se constataron tasas elevadas de analfabetismo entre los ancianos.
Estes dados são confirmados por pesquisas realizadas pelo IBGE, que constataram taxas elevadas de analfabetismo entre os idosos.