| Value | Category | Cases | |
|---|---|---|---|
| -666 | Other | 1 |
0.5%
|
| 1 | Never | 1 |
0.5%
|
| 2 | 1-2 times per term | 31 |
14.8%
|
| 3 | 1-2 times per month | 41 |
19.5%
|
| 4 | Weekly or more often | 136 |
64.8%
|