| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 290 |
28.7%
|
| 2 | About one month | 289 |
28.6%
|
| 3 | About two months | 188 |
18.6%
|
| 4 | More than two months | 199 |
19.7%
|
| 5 | Don't know | 42 |
4.2%
|
| 6 | Refused | 2 |
0.2%
|