| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 1214 |
39.2%
|
| 2 | No | 136 |
4.4%
|
| 3 | Never | 1550 |
50.1%
|
| 4 | None avaialable | 195 |
6.3%
|
| Sysmiss | 129 |