| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 74 |
0.3%
|
| 2 | Monthly | 95 |
0.4%
|
| 3 | Yearly | 345 |
1.4%
|
| 4 | Less often | 843 |
3.4%
|
| 5 | Not at all | 23293 |
94.5%
|
| Sysmiss | 510 |