Value | Category |
---|---|
1 | Less than one month |
2 | From one month to three months |
3 | From four months to six months |
4 | From seven months to eleven months |
5 | The entire year |
2147483625 | Don't know |
2147483634 | Missing |
2147483636 | Other |
2147483639 | Refused |
11 | .M |
Sysmiss |