Value | Category |
---|---|
-999 | Don't know |
-888 | Refuse to answer |
-777 | Not applicable (never) |
-666 | Other (please specify) |
1 | Once per week |
2 | Several times per week |
3 | Once per month |
4 | Several times per month |
5 | Once per year |
6 | Irregularly |
11 | .R |