| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 8 |
5.7%
|
| 2 | Between 2 and 4 weeks | 4 |
2.9%
|
| 3 | Between 1 and 2 months | 16 |
11.4%
|
| 4 | Between 2 and 6 months | 28 |
20%
|
| 5 | More than 6 months | 21 |
15%
|
| 6 | Never | 12 |
8.6%
|
| 7 | Don’t know (uncertain) | 51 |
36.4%
|
| Sysmiss | 3807 |