| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 551 |
9.1%
|
| 2 | More than 4 times in a week | 292 |
4.8%
|
| 3 | 4 times in a week | 430 |
7.1%
|
| 4 | Less than 4 times in a week | 643 |
10.6%
|
| 5 | Never | 4167 |
68.5%
|
| Sysmiss | 3777 |