| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 180 |
63.2%
|
| 2 | Twice a week | 40 |
14%
|
| 3 | Once a week | 50 |
17.5%
|
| 6 | Others | 15 |
5.3%
|
| Sysmiss | 10631 |