| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 209 |
0.8%
|
| 2 | Monthly | 751 |
3%
|
| 3 | Yearly | 3071 |
12.5%
|
| 4 | Less often | 3604 |
14.6%
|
| 5 | Not at all | 17015 |
69%
|
| Sysmiss | 510 |