| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.6%
|
|
| 1 | Weekly | 8 |
5.1%
|
| 2 | Monthly | 18 |
11.4%
|
| 3 | A few times a year | 57 |
36.1%
|
| 4 | Rarely | 41 |
25.9%
|
| 5 | Never | 14 |
8.9%
|
| Sysmiss | 19 |
12%
|