| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 1031 |
33.3%
|
| 2 | No | 109 |
3.5%
|
| 3 | Never | 1690 |
54.6%
|
| 4 | None avaialable | 265 |
8.6%
|
| Sysmiss | 129 |