| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 207 |
20.7%
|
| 2 | About one month | 275 |
27.5%
|
| 3 | About two months | 148 |
14.8%
|
| 4 | More than two months | 268 |
26.8%
|
| 5 | Don't know | 97 |
9.7%
|
| 6 | Refused | 5 |
0.5%
|