| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 7 |
0.6%
|
| 1 | Often | 1 |
0.1%
|
| 2 | Sometimes | 15 |
1.2%
|
| 3 | Rarely | 12 |
1%
|
| 4 | Never | 1127 |
91.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 69 |
5.6%
|
| Sysmiss | 25 |