| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 15 |
57.7%
|
| 2 | Twice a week | 4 |
15.4%
|
| 3 | Once a week | 3 |
11.5%
|
| 6 | Others | 4 |
15.4%
|
| Sysmiss | 10890 |