| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.2%
|
| 2 | 5 |
2%
|
|
| 3 | 17 |
6.9%
|
|
| 4 | 24 |
9.7%
|
|
| 5 | 44 |
17.8%
|
|
| 6 | 41 |
16.6%
|
|
| 7 | 50 |
20.2%
|
|
| 8 | 42 |
17%
|
|
| 9 | 15 |
6.1%
|
|
| 10 | Very effective | 6 |
2.4%
|
| 11 | Don't know | 103 | |
| Sysmiss | 16 |