| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
5.1%
|
| 3 | 1 |
2.6%
|
|
| 4 | 8 |
20.5%
|
|
| 5 | 8 |
20.5%
|
|
| 6 | 4 |
10.3%
|
|
| 7 | 8 |
20.5%
|
|
| 8 | 2 |
5.1%
|
|
| 9 | 2 |
5.1%
|
|
| 10 | Very effective | 4 |
10.3%
|
| -99 | 4 | ||
| 11 | Don't know | 48 | |
| Sysmiss | 18 |