| Value | Category | Cases | |
|---|---|---|---|
| 1 | Continuous | 496 |
46.1%
|
| 2 | On and off | 542 |
50.4%
|
| 8 | Don't know | 38 |
3.5%
|
| 9 | 11 | ||
| Sysmiss | 3116 |