| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.8%
|
|
| 1 | Not effective at all | 3 |
1.1%
|
| 2 | 9 |
3.4%
|
|
| 3 | 12 |
4.5%
|
|
| 4 | 21 |
7.9%
|
|
| 5 | 34 |
12.8%
|
|
| 6 | 36 |
13.5%
|
|
| 7 | 40 |
15%
|
|
| 8 | 34 |
12.8%
|
|
| 9 | 14 |
5.3%
|
|
| 10 | Very effective | 15 |
5.6%
|
| 11 | Don't know | 46 |
17.3%
|
| Sysmiss | 5 |