1 = Male
2 = Female

0 = Single
1 = Married

0 = 小于4k
1 = 大于等于4k

0 = non-employed
1 = Employed

0 = Live alone
1 = Live with others

1 = Inpatients
2 = Outpatients

0 = no
1 = yes

1 = no
2 = yes

0 = No
1 = Yes

1 = Non-smoking
2 = Smoking

0 = Non-drinking

0 = non-response
1 = Response