| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 79 |
7.9%
|
| 2 | About one month | 255 |
25.5%
|
| 3 | About two months | 241 |
24.1%
|
| 4 | More than two months | 311 |
31.1%
|
| 5 | Don't know | 100 |
10%
|
| 6 | Refused | 14 |
1.4%
|