| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 47 |
6.6%
|
| 2 | 1 to 2 months | 75 |
10.5%
|
| 3 | 3 to 6 months | 137 |
19.1%
|
| 4 | 7 to 11 months | 40 |
5.6%
|
| 5 | 1-2 years | 70 |
9.8%
|
| 6 | 3 or more years | 348 |
48.5%
|
| Sysmiss | 44325 |