| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 682 |
2.8%
|
| 2 | Monthly | 909 |
3.7%
|
| 3 | Yearly | 1151 |
4.7%
|
| 4 | Less often | 2712 |
11%
|
| 5 | Not at all | 19138 |
77.8%
|
| Sysmiss | 516 |