| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 123 |
0.5%
|
| 2 | Monthly | 465 |
1.9%
|
| 3 | Yearly | 1924 |
7.8%
|
| 4 | Less often | 2604 |
10.6%
|
| 5 | Not at all | 19534 |
79.2%
|
| Sysmiss | 510 |