| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 3 |
1.7%
|
| 2 | Between 2 and 4 weeks | 2 |
1.1%
|
| 3 | Between 1 and 2 months | 21 |
11.6%
|
| 4 | Between 2 and 6 months | 24 |
13.3%
|
| 5 | More than 6 months | 41 |
22.7%
|
| 6 | Never | 12 |
6.6%
|
| 7 | Don’t know (uncertain) | 78 |
43.1%
|
| Sysmiss | 3766 |