| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 1 |
0.2%
|
| 2 | Between 2 and 4 weeks | 0 |
0%
|
| 3 | Between 1 and 2 months | 6 |
1.3%
|
| 4 | Between 2 and 6 months | 57 |
12.2%
|
| 5 | More than 6 months | 327 |
70.2%
|
| 6 | Don’t know (uncertain) | 75 |
16.1%
|
| Sysmiss | 36 |