Sex of the participant
1 = Male
2 = Female

Etncity of participant
1 = White
2 = Mestizo
3 = Indigena
4 = Black
5 = Montubio
6 = Other

1 = Raramente
2 = Ocasionalmente
3 = A menudo
4 = Siempre o casi siempre

MMPUS_1. Nunca tengo tiempo suficiente para el móvil.
0 = 0
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 8
9 = 9
10 = 10