| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 218 |
55.2%
|
| 2 | Twice a week | 17 |
4.3%
|
| 3 | Once a week | 33 |
8.4%
|
| 6 | Others | 100 |
25.3%
|
| 7 | 27 |
6.8%
|
|
| Sysmiss | 10521 |