| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.1%
|
| 2 | 6 |
2.2%
|
|
| 3 | 9 |
3.4%
|
|
| 4 | 28 |
10.5%
|
|
| 5 | 43 |
16.1%
|
|
| 6 | 51 |
19.1%
|
|
| 7 | 65 |
24.3%
|
|
| 8 | 42 |
15.7%
|
|
| 9 | 15 |
5.6%
|
|
| 10 | Very effective | 5 |
1.9%
|
| 11 | Don't know | 88 | |
| Sysmiss | 11 |