| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1431 |
5.8%
|
| 2 | Monthly | 2735 |
11%
|
| 3 | Yearly | 2121 |
8.6%
|
| 4 | Less often | 4683 |
18.9%
|
| 5 | Not at all | 13797 |
55.7%
|
| Sysmiss | 817 |