| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 6 months | 140 |
8.9%
|
| 2 | 6 months to 12 months | 214 |
13.5%
|
| 3 | More than 12 months | 1227 |
77.6%
|
| Sysmiss | 21032 |