| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 48 |
4.8%
|
| 2 | About one month | 263 |
26.3%
|
| 3 | About two months | 175 |
17.5%
|
| 4 | More than two months | 271 |
27.1%
|
| 5 | Don't know | 237 |
23.7%
|
| 6 | Refused | 6 |
0.6%
|