| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 3 |
0.7%
|
| 2 | Between 2 and 4 weeks | 4 |
0.9%
|
| 3 | Between 1 and 2 months | 21 |
4.8%
|
| 4 | Between 2 and 6 months | 36 |
8.2%
|
| 5 | More than 6 months | 259 |
58.7%
|
| 6 | Don’t know (uncertain) | 118 |
26.8%
|
| Sysmiss | 689 |