| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 122 |
0.5%
|
| 2 | Monthly | 422 |
1.7%
|
| 3 | Yearly | 1220 |
5%
|
| 4 | Less often | 1851 |
7.5%
|
| 5 | Not at all | 20977 |
85.3%
|
| Sysmiss | 516 |