| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once a day | 460 |
7.6%
|
| 2 | More than once a day | 391 |
6.5%
|
| 3 | Once a week | 1823 |
30.3%
|
| 4 | More than once a week | 1465 |
24.3%
|
| 5 | Once a month | 1880 |
31.2%
|
| Sysmiss | 16427 |