| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 195 |
72.5%
|
| 2 | Twice a week | 25 |
9.3%
|
| 3 | Once a week | 41 |
15.2%
|
| 6 | Others | 8 |
3%
|
| Sysmiss | 10647 |