| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 1594 |
58.3%
|
| 1 | Once | 555 |
20.3%
|
| 2 | From time to time | 404 |
14.8%
|
| 3 | Often | 135 |
4.9%
|
| r | 47 |
1.7%
|