| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 90 |
23%
|
| 2 | 1-5 months | 57 |
14.5%
|
| 3 | 6-11 months | 49 |
12.5%
|
| 4 | More than 1 year | 196 |
50%
|
| Sysmiss | 22604 |