| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 284 |
28%
|
| 2 | About one month | 226 |
22.3%
|
| 3 | About two months | 92 |
9.1%
|
| 4 | More than two months | 166 |
16.4%
|
| 5 | Don't know | 220 |
21.7%
|
| 6 | Refused | 26 |
2.6%
|