1 = male
2 = female

1 = low
2 = moderate
3 = high

Education
1 = no education
2 = grade 1-6
3 = grade 7-9
4 = grade 10-12
5 = pre-undergraduate
6 = undergraduate
7 = graduate

Occupation
1 = none
2 = student
3 = trading
4 = parttime
5 = government
6 = farmer
7 = etc
8 = private

Marital status
1 = bachelor
2 = married
3 = divorce
4 = couple passed

Drugs type
1 = amphetamine
2 = heroin
3 = opium
4 = inhalant
5 = cocaine
6 = ecstacy
7 = etc.
8 = more than one

Therapy system
1 = involunteer
2 = volunteer

0 = none
1 = a little
2 = medium
3 = much

1 = known
2 = unknown

1 = most accept
2 = accept
3 = moderate
4 = unaccept
5 = most unaccept