| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 75 |
65.2%
|
| 2 | Twice a week | 9 |
7.8%
|
| 3 | Once a week | 21 |
18.3%
|
| 6 | Others | 10 |
8.7%
|
| Sysmiss | 10801 |