| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. none of them | 19 |
50%
|
| 2 | 2. a few of them | 12 |
31.6%
|
| 3 | 3. some of them | 1 |
2.6%
|
| 4 | 4. most or all of them | 1 |
2.6%
|
| 9 | 9. don't know | 5 |
13.2%
|
| Sysmiss | 61 |