| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1%
|
| 2 | 2 |
1%
|
|
| 3 | 8 |
4.1%
|
|
| 4 | 4 |
2.1%
|
|
| 5 | 10 |
5.1%
|
|
| 6 | 21 |
10.8%
|
|
| 7 | 24 |
12.3%
|
|
| 8 | 34 |
17.4%
|
|
| 9 | 16 |
8.2%
|
|
| 10 | Very effective | 16 |
8.2%
|
| 11 | Don't know | 58 |
29.7%
|
| Sysmiss | 6 |