| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | None | 76 |
6.3%
|
| 1 | Some of them | 600 |
50%
|
| 2 | Most of them | 251 |
20.9%
|
| 3 | All of them | 69 |
5.8%
|
| 9 | Don't know/haven't heard | 203 |
16.9%
|