| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 435 |
32.8%
|
| 1 | Once | 325 |
24.5%
|
| 2 | From time to time | 413 |
31.2%
|
| 3 | Often | 140 |
10.6%
|
| r | 12 |
0.9%
|
|
| Sysmiss | 1410 |