| Value | Category | Cases | |
|---|---|---|---|
| 1 | Several times a week | 2011 |
22.8%
|
| 2 | About once a week | 1379 |
15.6%
|
| 3 | About once a month | 896 |
10.2%
|
| 4 | Occassionally | 4528 |
51.4%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 2801 |