| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 5937 |
24%
|
| 2 | Monthly | 2839 |
11.5%
|
| 3 | Yearly | 1433 |
5.8%
|
| 4 | Less often | 4017 |
16.2%
|
| 5 | Not at all | 10541 |
42.6%
|
| Sysmiss | 817 |