| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 3 months | 147 |
21.8%
|
| 2 | 3 - 6 months | 290 |
43%
|
| 3 | 6 months or more | 146 |
21.7%
|
| 4 | It is difficult to answer | 91 |
13.5%
|
| 99 | Refused to answer | 0 |
0%
|
| Sysmiss | 28988 |