| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 3 |
0.2%
|
| 1 | Often | 3 |
0.2%
|
| 2 | Sometimes | 117 |
9.5%
|
| 3 | Rarely | 75 |
6.1%
|
| 4 | Never | 1028 |
83.5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 5 |
0.4%
|
| Sysmiss | 25 |