| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 264 |
26.4%
|
| 2 | About one month | 287 |
28.7%
|
| 3 | About two months | 126 |
12.6%
|
| 4 | More than two months | 253 |
25.3%
|
| 5 | Don't know | 66 |
6.6%
|
| 6 | Refused | 4 |
0.4%
|