| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 5 |
2.3%
|
| 2 | Between 2 and 4 weeks | 3 |
1.4%
|
| 3 | Between 1 and 2 months | 20 |
9%
|
| 4 | Between 2 and 6 months | 11 |
5%
|
| 5 | More than 6 months | 44 |
19.8%
|
| 6 | Don’t know (uncertain) | 139 |
62.6%
|
| Sysmiss | 1785 |