| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.4%
|
| 2 | 7 |
2.1%
|
|
| 3 | 11 |
3.3%
|
|
| 4 | 12 |
3.6%
|
|
| 5 | 34 |
10.3%
|
|
| 6 | 44 |
13.4%
|
|
| 7 | 32 |
9.7%
|
|
| 8 | 30 |
9.1%
|
|
| 9 | 19 |
5.8%
|
|
| 10 | Very effective | 25 |
7.6%
|
| 11 | Don't know | 107 |
32.5%
|
| Sysmiss | 25 |