| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 280 |
87.8%
|
| 2 | Twice a week | 7 |
2.2%
|
| 3 | Once a week | 17 |
5.3%
|
| 6 | Others | 15 |
4.7%
|
| Sysmiss | 10597 |