| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 3 |
0%
|
| 1 | daily | 24613 |
38.8%
|
| 2 | frequently | 11162 |
17.6%
|
| 3 | occasionally | 8833 |
13.9%
|
| 4 | rarely/never | 17934 |
28.3%
|
| 8 | don't know | 138 |
0.2%
|
| 9 | no answer | 761 |
1.2%
|
| Sysmiss | 18573 |