What is the highest level of education you have achieved?
0 = No qualifications
1 = Elementary school
2 = Secondary school
3 = High school
4 = Higher education

Education level
0 = Low education
1 = high education

What is your marital status?
1 = Single
2 = Separated
3 = Partner
4 = Divorced
5 = Married
6 = Remarried

Do you have any children?
0 = No
1 = Yes

Depression
0 = No
1 = Yes
2 = Do not know

How often do you use drugs other than alcohol?
0 = Never
1 = Once a month or less often
2 = 2-4 times a month
3 = 2-3 times a week
4 = 4 times a week or more often

How many times do you take drugs on a typical day when you use drugs?
0 = 0
1 = 1-2
2 = 3-4
3 = 5-6
4 = 7 or more

How often are you influenced heavily by drugs?
0 = Never
1 = Less often than once a month
2 = Every month
3 = Every week
4 = Daily or almost every day

Have you or anyone else been hurt (mentally or physically) because you used drugs?
0 = No
2 = Yes, but not over the past year
4 = Yes, over the past year