| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 1626 |
81%
|
| 1 | Once | 167 |
8.3%
|
| 2 | From time to time | 117 |
5.8%
|
| 3 | Often | 58 |
2.9%
|
| r | 40 |
2%
|
|
| Sysmiss | 727 |