| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 204 |
18.9%
|
| 2 | 1 - 3 month | 319 |
29.5%
|
| 3 | 3 - 6 month | 276 |
25.6%
|
| 4 | More than 6 month | 281 |
26%
|
| Sysmiss | 20804 |