| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1206 |
36.9%
|
| 2 | Less than once a year | 369 |
11.3%
|
| 3 | About once or twice a year | 446 |
13.7%
|
| 4 | Several times a year | 807 |
24.7%
|
| 5 | About once a month or more | 436 |
13.4%
|
| Sysmiss | 28 |