| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 2 |
0.2%
|
| 1 | Often | 1 |
0.1%
|
| 2 | Sometimes | 17 |
1.4%
|
| 3 | Rarely | 8 |
0.6%
|
| 4 | Never | 1193 |
96.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 10 |
0.8%
|
| Sysmiss | 25 |