| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 118 |
11.8%
|
| 2 | About one month | 271 |
27.1%
|
| 3 | About two months | 133 |
13.3%
|
| 4 | More than two months | 331 |
33.1%
|
| 5 | Don't know | 142 |
14.2%
|
| 6 | Refused | 5 |
0.5%
|