| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 3 |
0.1%
|
| 1 | Often | 1 |
0%
|
| 2 | Sometimes | 83 |
2.3%
|
| 3 | Rarely | 34 |
1%
|
| 4 | Never | 3440 |
96.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 13 |
0.4%
|
| Sysmiss | 45 |