| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
4.4%
|
| 2 | 3 |
4.4%
|
|
| 3 | 6 |
8.8%
|
|
| 4 | 3 |
4.4%
|
|
| 5 | 8 |
11.8%
|
|
| 6 | 6 |
8.8%
|
|
| 7 | 10 |
14.7%
|
|
| 8 | 16 |
23.5%
|
|
| 9 | 7 |
10.3%
|
|
| 10 | Very effective | 6 |
8.8%
|
| -99 | 9 | ||
| 11 | Don't know | 65 | |
| Sysmiss | 18 |