| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.7%
|
|
| 1 | Not effective at all | 1 |
0.4%
|
| 2 | 4 |
1.5%
|
|
| 3 | 12 |
4.5%
|
|
| 4 | 29 |
10.9%
|
|
| 5 | 34 |
12.7%
|
|
| 6 | 39 |
14.6%
|
|
| 7 | 37 |
13.9%
|
|
| 8 | 37 |
13.9%
|
|
| 9 | 18 |
6.7%
|
|
| 10 | Very effective | 8 |
3%
|
| 11 | Don't know | 46 |
17.2%
|
| Sysmiss | 4 |