| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 104 |
10.4%
|
| 2 | About one month | 239 |
23.9%
|
| 3 | About two months | 157 |
15.7%
|
| 4 | More than two months | 478 |
47.8%
|
| 5 | Don't know | 16 |
1.6%
|
| 6 | Refused | 6 |
0.6%
|