1 = 18-24
2 = 25-44
3 = 45-64
4 = 0ver 64

1 = Male
2 = Female

1 = Primary
2 = Secondary
3 = Tertiary
4 = Bachelor
5 = Master
6 = Doctorate
7 = No formal eduation

1 = Single
2 = Never married
3 = Married
4 = Divorced
5 = Widowed

0 = No
1 = Yes

1 = Alone
2 = With family
3 = With friend
4 = Residential setting in nursing home

1 = Public housing
2 = Private housing (Owned)
3 = Private housing (Rental)
4 = Nursing home

1 = FT Student
2 = PT Work
3 = FT Work
4 = Unemployed
5 = Retired
6 = Housewife

1 = Clerical
2 = Technician
3 = Professional
4 = Education
5 = Civil Servant
6 = Catering
7 = Housewife
8 = Retired
9 = Sheltered workshop worker
10 = Unemployed
11 = Student

0 = Never
1 = Several days
2 = More than half of the last two weeks
3 = Almost everyday

0 = No difficulty
1 = Some difficulty
2 = Very difficult
3 = Extremely difficult

1 = Never
2 = Seldom
3 = Occasional
4 = Sometimes
5 = Always

0 = Never
1 = Seldom
2 = Less than half of the time
3 = More than half of the time
4 = Most of the time
5 = Almost all the time

1 = Strongly agree
2 = Agree
3 = Disagree
4 = Strongly disagree

1 = Strongly disagree
2 = Disagree
3 = Slightly disagree
4 = Neither agree nor disagree
5 = Slightly agree
6 = Agree
7 = Strongly agree