| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
5.7%
|
| 2 | 3 |
4.3%
|
|
| 3 | 3 |
4.3%
|
|
| 4 | 2 |
2.9%
|
|
| 5 | 7 |
10%
|
|
| 6 | 9 |
12.9%
|
|
| 7 | 10 |
14.3%
|
|
| 8 | 10 |
14.3%
|
|
| 9 | 10 |
14.3%
|
|
| 10 | Very effective | 12 |
17.1%
|
| -99 | 7 | ||
| 11 | Don't know | 65 | |
| Sysmiss | 18 |