| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 208 |
20.8%
|
| 2 | About one month | 226 |
22.6%
|
| 3 | About two months | 113 |
11.3%
|
| 4 | More than two months | 318 |
31.8%
|
| 5 | Don't know | 94 |
9.4%
|
| 6 | Refused | 41 |
4.1%
|