| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 160 |
15.9%
|
| 2 | About one month | 308 |
30.7%
|
| 3 | About two months | 144 |
14.3%
|
| 4 | More than two months | 284 |
28.3%
|
| 5 | Don't know | 97 |
9.7%
|
| 6 | Refused | 11 |
1.1%
|