| Value | Category | Cases | |
|---|---|---|---|
| -99 | 7 |
1.3%
|
|
| 1 | Weekly | 29 |
5.5%
|
| 2 | Monthly | 121 |
23%
|
| 3 | A few times a year | 214 |
40.6%
|
| 4 | Rarely | 70 |
13.3%
|
| 5 | Never | 44 |
8.3%
|
| Sysmiss | 42 |
8%
|