| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1143 |
4.6%
|
| 2 | Monthly | 3626 |
14.7%
|
| 3 | Yearly | 3084 |
12.5%
|
| 4 | Less often | 4481 |
18.2%
|
| 5 | Not at all | 12258 |
49.8%
|
| Sysmiss | 516 |