| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 429 |
7.1%
|
| 2 | More than 4 times in a week | 313 |
5.1%
|
| 3 | 4 times in a week | 471 |
7.7%
|
| 4 | Less than 4 times in a week | 939 |
15.4%
|
| 5 | Never | 3931 |
64.6%
|
| Sysmiss | 3777 |