| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never or less than once a year | 14 |
1.4%
|
| 2 | Every time we use them | 507 |
51.7%
|
| 3 | At least once a week | 300 |
30.6%
|
| 4 | At least once a month | 150 |
15.3%
|
| 5 | At least once a year | 6 |
0.6%
|
| 6 | Don't know | 4 |
0.4%
|