| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 1035 |
51.5%
|
| 1 | Once | 123 |
6.1%
|
| 2 | From time to time | 548 |
27.3%
|
| 3 | Often | 286 |
14.2%
|
| 97 | NA | 0 |
0%
|
| a | 16 |
0.8%
|
|
| Sysmiss | 727 |