| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.6%
|
|
| 1 | Weekly | 17 |
5.1%
|
| 2 | Monthly | 58 |
17.3%
|
| 3 | A few times a year | 135 |
40.3%
|
| 4 | Rarely | 48 |
14.3%
|
| 5 | Never | 31 |
9.3%
|
| Sysmiss | 44 |
13.1%
|