| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once per week | 91 |
8.2%
|
| 2 | Several times per week | 65 |
5.9%
|
| 3 | Once per month | 413 |
37.2%
|
| 4 | Several times per month | 311 |
28%
|
| 5 | Once per year | 229 |
20.6%
|
| Sysmiss | 22216 |