| Value | Category | Cases | |
|---|---|---|---|
| 1 | Continuous | 788 |
32.5%
|
| 2 | On and off | 1553 |
64.1%
|
| 8 | Don't know | 83 |
3.4%
|
| 9 | 15 | ||
| Sysmiss | 1764 |