| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 315 |
31.5%
|
| 2 | About one month | 289 |
28.9%
|
| 3 | About two months | 178 |
17.8%
|
| 4 | More than two months | 176 |
17.6%
|
| 5 | Don't know | 35 |
3.5%
|
| 6 | Refused | 7 |
0.7%
|