| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.7%
|
| 2 | 3 |
1.7%
|
|
| 3 | 4 |
2.2%
|
|
| 4 | 5 |
2.8%
|
|
| 5 | 34 |
19%
|
|
| 6 | 34 |
19%
|
|
| 7 | 19 |
10.6%
|
|
| 8 | 36 |
20.1%
|
|
| 9 | 26 |
14.5%
|
|
| 10 | Very effective | 15 |
8.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 71 |