| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1124 |
4.5%
|
| 2 | Monthly | 2179 |
8.8%
|
| 3 | Yearly | 1331 |
5.4%
|
| 4 | Less often | 3335 |
13.5%
|
| 5 | Not at all | 16798 |
67.8%
|
| Sysmiss | 817 |