| Value | Category | Cases | |
|---|---|---|---|
| 1 | At least once a week | 73 |
2.5%
|
| 2 | At least once a month | 154 |
5.3%
|
| 3 | Several times | 301 |
10.4%
|
| 4 | Once or twice | 430 |
14.9%
|
| 5 | Never | 1928 |
66.8%
|
| Sysmiss | 21 |