| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 5 |
1.7%
|
|
| 3 | 16 |
5.4%
|
|
| 4 | 17 |
5.7%
|
|
| 5 | 39 |
13%
|
|
| 6 | 62 |
20.7%
|
|
| 7 | 74 |
24.7%
|
|
| 8 | 53 |
17.7%
|
|
| 9 | 21 |
7%
|
|
| 10 | Very effective | 10 |
3.3%
|
| 11 | Don't know | 52 | |
| Sysmiss | 15 |