| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1276 |
5.2%
|
| 2 | Monthly | 2563 |
10.3%
|
| 3 | Yearly | 1521 |
6.1%
|
| 4 | Less often | 3640 |
14.7%
|
| 5 | Not at all | 15767 |
63.7%
|
| Sysmiss | 817 |