| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 days | 5 |
15.6%
|
| 2 | 1 to 3 months | 3 |
9.4%
|
| 3 | More than three months but less than six months | 1 |
3.1%
|
| 4 | 6 months or more | 23 |
71.9%
|
| Sysmiss | 4633 |