| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 133 |
13.3%
|
| 2 | About one month | 332 |
33.2%
|
| 3 | About two months | 215 |
21.5%
|
| 4 | More than two months | 144 |
14.4%
|
| 5 | Don't know | 138 |
13.8%
|
| 6 | Refused | 38 |
3.8%
|