| Value | Category | Cases | |
|---|---|---|---|
| -666 | Other | 1 |
0.5%
|
| 2 | 1-2 times per term | 20 |
9.6%
|
| 3 | 1-2 times per month | 51 |
24.4%
|
| 4 | Weekly or more often | 137 |
65.6%
|