| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 12 |
4.2%
|
| 2 | 1 to 2 months | 30 |
10.6%
|
| 3 | 3 to 6 months | 66 |
23.3%
|
| 4 | 7 to 11 months | 10 |
3.5%
|
| 5 | 1-2 years | 38 |
13.4%
|
| 6 | 3 or more years | 127 |
44.9%
|
| Sysmiss | 43397 |