| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one week | 286 |
66.4%
|
| 2 | Between 1 week and 1 month | 91 |
21.1%
|
| 3 | Between 1 and 3 months | 36 |
8.4%
|
| 4 | More than 3 months | 18 |
4.2%
|
| Sysmiss | 4364 |