| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or, once or more per week | 33 |
3.9%
|
| 2 | Once or twice per month | 8 |
0.9%
|
| 3 | Rarely | 14 |
1.7%
|
| 4 | Never | 571 |
67.7%
|
| 9 | 218 |
25.8%
|
|
| Sysmiss | 11165 |