| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 711 |
35.2%
|
| 2 | Once a year | 45 |
2.2%
|
| 3 | Once a term | 495 |
24.5%
|
| 4 | Once a month | 420 |
20.8%
|
| 5 | Once a week | 173 |
8.6%
|
| 98 | Other | 174 |
8.6%
|
| Sysmiss | 1309 |