| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than two weeks | 100 |
10%
|
| 2 | About one month | 251 |
25.1%
|
| 3 | About two months | 181 |
18.1%
|
| 4 | More than two months | 384 |
38.4%
|
| 5 | Don't know | 81 |
8.1%
|
| 6 | Refused | 3 |
0.3%
|