| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 25 |
2.9%
|
| 2 | Weekly | 86 |
9.9%
|
| 3 | Monthly | 133 |
15.3%
|
| 4 | Yearly | 57 |
6.5%
|
| 5 | Not at all | 570 |
65.4%
|
| Sysmiss | 128 |