| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one month | 7 |
46.7%
|
| 2 | 1 to 3 month | 4 |
26.7%
|
| 3 | 4 to 6 month | 0 |
0%
|
| 4 | 7 to 12 month | 1 |
6.7%
|
| 5 | 13 to 24 months | 1 |
6.7%
|
| 6 | More than 2 years | 2 |
13.3%
|
| Sysmiss | 11649 |