| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 551 |
15.4%
|
| 1 | Often | 33 |
0.9%
|
| 2 | Sometimes | 27 |
0.8%
|
| 3 | Rarely | 23 |
0.6%
|
| 4 | Never | 2913 |
81.5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 27 |
0.8%
|
| Sysmiss | 45 |