| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 4184 |
17%
|
| 2 | Monthly | 3163 |
12.8%
|
| 3 | Yearly | 1544 |
6.3%
|
| 4 | Less often | 3014 |
12.2%
|
| 5 | Not at all | 12745 |
51.7%
|
| Sysmiss | 510 |