| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 829 |
27.6%
|
| 2 | About one month | 975 |
32.5%
|
| 3 | About two months | 485 |
16.2%
|
| 4 | More than two months | 677 |
22.6%
|
| 5 | Don't know | 30 |
1%
|
| 6 | Refused | 4 |
0.1%
|