| Value | Category | Cases | |
|---|---|---|---|
| -95 | Refused | 0 |
0%
|
| 0 | Never | 1331 |
66.3%
|
| 1 | Once | 281 |
14%
|
| 2 | From time to time | 282 |
14%
|
| 3 | Often | 88 |
4.4%
|
| r | 26 |
1.3%
|
|
| Sysmiss | 727 |