| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 336 |
33.6%
|
| 2 | About one month | 251 |
25.1%
|
| 3 | About two months | 122 |
12.2%
|
| 4 | More than two months | 253 |
25.3%
|
| 5 | Don't know | 36 |
3.6%
|
| 6 | Refused | 3 |
0.3%
|