| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 117 |
11.7%
|
| 2 | About one month | 306 |
30.6%
|
| 3 | About two months | 169 |
16.9%
|
| 4 | More than two months | 303 |
30.3%
|
| 5 | Don't know | 89 |
8.9%
|
| 6 | Refused | 16 |
1.6%
|