| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 166 |
16.6%
|
| 2 | About one month | 288 |
28.8%
|
| 3 | About two months | 167 |
16.7%
|
| 4 | More than two months | 248 |
24.8%
|
| 5 | Don't know | 130 |
13%
|
| 6 | Refused | 1 |
0.1%
|