| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 26 |
3.8%
|
| 2 | Everytime we use them | 321 |
46.9%
|
| 3 | At least once a week | 267 |
39%
|
| 4 | At least once a month | 47 |
6.9%
|
| 5 | At least once a year | 0 |
0%
|
| 6 | Don't remember | 23 |
3.4%
|