| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 273 |
48.8%
|
| 1 | Once | 136 |
24.3%
|
| 2 | From time to time | 105 |
18.8%
|
| 3 | Often | 34 |
6.1%
|
| r | 12 |
2.1%
|
|
| Sysmiss | 2175 |