The following ranges were adopted for the age variable, in years: 18 to 20, 21 to 25, 26 to 30, 31 to 35, 36 to 40 and 41 to 54.
Para la variable edad se adoptaron las siguientes categorías en años: 18-20, 21-25, 26-30, 31-35, 36-40 y 41-54.
Para a variável idade foram adotadas as seguintes categorias em anos: 18 a 20, 21 a 25, 26 a 30, 31 a 35, 36 a 40 e 41 a 54.