| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 64 |
55.7%
|
| 2 | Twice a week | 20 |
17.4%
|
| 3 | Once a week | 22 |
19.1%
|
| 6 | Others | 9 |
7.8%
|
| Sysmiss | 10801 |