| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 232 |
23.2%
|
| 2 | About one month | 271 |
27.1%
|
| 3 | About two months | 138 |
13.8%
|
| 4 | More than two months | 193 |
19.3%
|
| 5 | Don't know | 153 |
15.3%
|
| 6 | Refused | 13 |
1.3%
|