| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 6 months | 270 |
6.4%
|
| 2 | 6 months | 2230 |
52.7%
|
| 3 | More than 6 months | 1545 |
36.5%
|
| 8 | Do not know | 184 |
4.4%
|