| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.9%
|
| 2 | 4 |
1.9%
|
|
| 3 | 5 |
2.4%
|
|
| 4 | 7 |
3.3%
|
|
| 5 | 12 |
5.7%
|
|
| 6 | 20 |
9.5%
|
|
| 7 | 24 |
11.4%
|
|
| 8 | 30 |
14.3%
|
|
| 9 | 34 |
16.2%
|
|
| 10 | Very effective | 70 |
33.3%
|
| -99 | 11 | ||
| 11 | Don't know | 78 | |
| Sysmiss | 53 |