| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.4%
|
| 2 | 8 |
6.8%
|
|
| 3 | 8 |
6.8%
|
|
| 4 | 12 |
10.3%
|
|
| 5 | 17 |
14.5%
|
|
| 6 | 26 |
22.2%
|
|
| 7 | 15 |
12.8%
|
|
| 8 | 11 |
9.4%
|
|
| 9 | 8 |
6.8%
|
|
| 10 | Very effective | 8 |
6.8%
|
| 11 | Don't know | 87 | |
| Sysmiss | 34 |