| Value | Category | Cases | |
|---|---|---|---|
| -99 | 6 |
1.5%
|
|
| 1 | Weekly | 16 |
4.1%
|
| 2 | Monthly | 49 |
12.4%
|
| 3 | A few times a year | 110 |
27.8%
|
| 4 | Rarely | 78 |
19.7%
|
| 5 | Never | 63 |
15.9%
|
| Sysmiss | 73 |
18.5%
|