| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. daily | 236 |
5.4%
|
| 2 | 2. weekly | 460 |
10.5%
|
| 3 | 3. monthly | 1466 |
33.5%
|
| 4 | 4. once a term | 1447 |
33.1%
|
| 5 | 5. never | 769 |
17.6%
|
| Sysmiss | 160 |