f = Female
m = Male

Marital status
0 = Unmarried
1 = Married

Level of education
1 = Did not complete high school
2 = High school degree
3 = Some college
4 = College degree
5 = Post-undergraduate degree

Income category in thousands
1 = Under £25
2 = £25 - £49
3 = £50 - £74
4 = £75+

1 = Highly dissatisfied
2 = Somewhat dissatisfied
3 = Neutral
4 = Somewhat satisfied
5 = Highly satisfied