| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 613 |
10.1%
|
| 2 | More than 4 times in a week | 497 |
8.2%
|
| 3 | 4 times in a week | 635 |
10.4%
|
| 4 | Less than 4 times in a week | 1534 |
25.2%
|
| 5 | Never | 2804 |
46.1%
|
| Sysmiss | 3777 |