| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 281 |
28.1%
|
| 2 | About one month | 246 |
24.6%
|
| 3 | About two months | 247 |
24.7%
|
| 4 | More than two months | 48 |
4.8%
|
| 5 | Don't know | 154 |
15.4%
|
| 6 | Refused | 24 |
2.4%
|