| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 357 |
17.7%
|
| 2 | Once a year | 58 |
2.9%
|
| 3 | Once a term | 545 |
27%
|
| 4 | Once a month | 547 |
27.1%
|
| 5 | Once a week | 323 |
16%
|
| 98 | Other | 188 |
9.3%
|
| Sysmiss | 1309 |