| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 541 |
8.9%
|
| 2 | More than 4 times in a week | 476 |
7.8%
|
| 3 | 4 times in a week | 515 |
8.5%
|
| 4 | Less than 4 times in a week | 893 |
14.7%
|
| 5 | Never | 3658 |
60.1%
|
| Sysmiss | 3777 |