| Value | Category | Cases | |
|---|---|---|---|
| 0 | 16 |
0.2%
|
|
| 1 | Several times a week | 1354 |
21%
|
| 2 | About once a week | 1032 |
16%
|
| 3 | About once a month | 657 |
10.2%
|
| 4 | Occassionally | 3400 |
52.6%
|
| Sysmiss | 5156 |