| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 235 |
1%
|
| 2 | Monthly | 808 |
3.3%
|
| 3 | Yearly | 1307 |
5.3%
|
| 4 | Less often | 2274 |
9.2%
|
| 5 | Not at all | 20026 |
81.2%
|
| Sysmiss | 510 |