| Value | Category | Cases | |
|---|---|---|---|
| 1 | once a day | 109 |
6.8%
|
| 2 | Once a week | 376 |
23.3%
|
| 3 | once every two weeks | 259 |
16.1%
|
| 4 | once a month | 456 |
28.3%
|
| 5 | occasionally | 411 |
25.5%
|
| Sysmiss | 4830 |