| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. daily | 116 |
2.6%
|
| 2 | 2. weekly | 457 |
10.4%
|
| 3 | 3. monthly | 1779 |
40.6%
|
| 4 | 4. once a term | 1585 |
36.2%
|
| 5 | 5. never | 441 |
10.1%
|
| Sysmiss | 160 |