| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 22 |
4.7%
|
| 2 | 1 to 2 months | 53 |
11.4%
|
| 3 | 3 to 6 months | 80 |
17.2%
|
| 4 | 7 to 11 months | 8 |
1.7%
|
| 5 | 1-2 years | 65 |
13.9%
|
| 6 | 3 or more years | 238 |
51.1%
|
| Sysmiss | 43794 |