| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 60 |
6%
|
| 2 | About one month | 167 |
16.7%
|
| 3 | About two months | 161 |
16.1%
|
| 4 | More than two months | 463 |
46.3%
|
| 5 | Don't know | 134 |
13.4%
|
| 6 | Refused | 15 |
1.5%
|