| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one month | 26 |
8.7%
|
| 2 | More than one month and less than 3 months | 56 |
18.7%
|
| 3 | 3 months to less than 6 months | 78 |
26%
|
| 4 | 6 months to 12 months | 87 |
29%
|
| 5 | More than one year | 47 |
15.7%
|
| 98 | Don’t know | 6 |
2%
|
| Sysmiss | 2 |