Value | Category |
---|---|
1 | Less than one week |
2 | One week but less than 1 month |
3 | 1 month but less than 3 |
4 | 3 months but less than 6 |
5 | 6 months but less than 9 |
6 | 9 months but less than 9 |
7 | 12 months and over |
8 | Have not tried |
9 | Not stated |
Sysmiss |