| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 month or less | 1813 |
12.9%
|
| 2 | 2-4 months | 4121 |
29.4%
|
| 3 | 5-7 months | 3593 |
25.6%
|
| 4 | Above 7 months | 4509 |
32.1%
|
| Sysmiss | 12519 |