| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 8 |
3.3%
|
| 2 | Between 2 and 4 weeks | 4 |
1.6%
|
| 3 | Between 1 and 2 months | 13 |
5.3%
|
| 4 | Between 2 and 6 months | 14 |
5.8%
|
| 5 | More than 6 months | 58 |
23.9%
|
| 6 | Don’t know (uncertain) | 146 |
60.1%
|
| Sysmiss | 1758 |