| Value | Category | Cases | |
|---|---|---|---|
| 1 | <1 Month | 5 |
7.7%
|
| 2 | 1-2 Months | 23 |
35.4%
|
| 3 | 3-4 Months | 14 |
21.5%
|
| 4 | 4 Months | 22 |
33.8%
|
| 8 | DK | 0 |
0%
|
| 9 | Missing | 1 |
1.5%
|
| Sysmiss | 319 |