| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 1115 |
36%
|
| 2 | No | 200 |
6.5%
|
| 3 | Never | 1640 |
53%
|
| 4 | None avaialable | 140 |
4.5%
|
| Sysmiss | 129 |