| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 163 |
16.3%
|
| 2 | About one month | 227 |
22.7%
|
| 3 | About two months | 193 |
19.3%
|
| 4 | More than two months | 361 |
36.1%
|
| 5 | Don't know | 55 |
5.5%
|
| 6 | Refused | 1 |
0.1%
|