| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. daily | 116 |
2.6%
|
| 2 | 2. weekly | 337 |
7.7%
|
| 3 | 3. monthly | 1859 |
42.5%
|
| 4 | 4. once a term | 1605 |
36.7%
|
| 5 | 5. never | 461 |
10.5%
|
| Sysmiss | 160 |