| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 300 |
1.2%
|
| 2 | Monthly | 791 |
3.2%
|
| 3 | Yearly | 828 |
3.3%
|
| 4 | Less often | 2322 |
9.4%
|
| 5 | Not at all | 20526 |
82.9%
|
| Sysmiss | 817 |