| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
1.4%
|
|
| 1 | Not effective at all | 2 |
0.9%
|
| 2 | 0 |
0%
|
|
| 3 | 10 |
4.7%
|
|
| 4 | 3 |
1.4%
|
|
| 5 | 11 |
5.1%
|
|
| 6 | 28 |
13%
|
|
| 7 | 28 |
13%
|
|
| 8 | 33 |
15.3%
|
|
| 9 | 21 |
9.8%
|
|
| 10 | Very effective | 21 |
9.8%
|
| 11 | Don't know | 55 |
25.6%
|
| Sysmiss | 5 |