Value | Category |
---|---|
-9 | Don’t know |
-8 | Refused |
-3 | Missing |
1 | In the last 30 days |
2 | One to five months ago |
3 | Six to twelve months ago |
4 | More than one and less than two years ago |
5 | Two to four years ago |
6 | Five to ten years ago |
7 | More than ten years ago |
8 | Never |
Sysmiss |