| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 144 |
13.7%
|
| 2 | About one month | 169 |
16.1%
|
| 3 | About two months | 147 |
14%
|
| 4 | More than two months | 394 |
37.5%
|
| 5 | Don't know | 190 |
18.1%
|
| 6 | Refused | 7 |
0.7%
|