| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 183 |
17.4%
|
| 2 | About one month | 280 |
26.7%
|
| 3 | About two months | 159 |
15.1%
|
| 4 | More than two months | 348 |
33.1%
|
| 5 | Don't know | 60 |
5.7%
|
| 6 | Refused | 20 |
1.9%
|