| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 8 |
2.2%
|
| 2 | Between 2 and 4 weeks | 12 |
3.2%
|
| 3 | Between 1 and 2 months | 15 |
4.1%
|
| 4 | Between 2 and 6 months | 9 |
2.4%
|
| 5 | More than 6 months | 116 |
31.4%
|
| 6 | Don’t know (uncertain) | 210 |
56.8%
|
| Sysmiss | 1636 |