gender of student
1 = males
2 = females

marital status
1 = single
2 = married
3 = divorced

age group
1 = less than 22
2 = 22-29
3 = 30 or more

does subject have children
0 = no
1 = yes

positive evaluation, institution
1 = strongly disagree
2 = disagree
3 = neutral
4 = agree
5 = strongly agree