| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 1 |
3%
|
| 2 | Between 2 and 4 weeks | 1 |
3%
|
| 3 | Between 1 and 2 months | 5 |
15.2%
|
| 4 | Between 2 and 6 months | 2 |
6.1%
|
| 5 | More than 6 months | 2 |
6.1%
|
| 6 | Never | 3 |
9.1%
|
| 7 | Don’t know (uncertain) | 19 |
57.6%
|
| Sysmiss | 4516 |