| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 2 |
3.3%
|
| 2 | Twice a week | 53 |
86.9%
|
| 3 | Once a week | 0 |
0%
|
| 6 | Others | 6 |
9.8%
|
| Sysmiss | 10855 |