| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.6%
|
| 2 | 4 |
3.6%
|
|
| 3 | 7 |
6.3%
|
|
| 4 | 7 |
6.3%
|
|
| 5 | 21 |
18.9%
|
|
| 6 | 22 |
19.8%
|
|
| 7 | 20 |
18%
|
|
| 8 | 18 |
16.2%
|
|
| 9 | 5 |
4.5%
|
|
| 10 | Very effective | 3 |
2.7%
|
| -99 | 5 | ||
| 11 | Don't know | 28 | |
| Sysmiss | 15 |