| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.1%
|
| 2 | 3 |
1.6%
|
|
| 3 | 1 |
0.5%
|
|
| 4 | 7 |
3.6%
|
|
| 5 | 18 |
9.3%
|
|
| 6 | 18 |
9.3%
|
|
| 7 | 22 |
11.4%
|
|
| 8 | 25 |
13%
|
|
| 9 | 16 |
8.3%
|
|
| 10 | Very effective | 12 |
6.2%
|
| 11 | Don't know | 67 |
34.7%
|
| Sysmiss | 8 |