| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 22 |
0.5%
|
| -888 | -888 | 90 |
2%
|
| 1 | Most of the time | 172 |
3.7%
|
| 2 | Some of the time | 913 |
19.9%
|
| 3 | Not very often | 1199 |
26.1%
|
| 4 | Never | 2195 |
47.8%
|
| Sysmiss | 359 |