| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 116 |
11.6%
|
| 2 | About one month | 252 |
25.2%
|
| 3 | About two months | 221 |
22.1%
|
| 4 | More than two months | 377 |
37.7%
|
| 5 | Don't know | 31 |
3.1%
|
| 6 | Refused | 3 |
0.3%
|