| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 1598 |
79.6%
|
| 1 | Once | 197 |
9.8%
|
| 2 | From time to time | 126 |
6.3%
|
| 3 | Often | 60 |
3%
|
| r | 27 |
1.3%
|
|
| Sysmiss | 727 |