| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 1146 |
57.1%
|
| 1 | Once | 346 |
17.2%
|
| 2 | From time to time | 369 |
18.4%
|
| 3 | Often | 109 |
5.4%
|
| r | 38 |
1.9%
|
|
| Sysmiss | 727 |