| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.9%
|
|
| 1 | Not effective at all | 1 |
0.5%
|
| 2 | 3 |
1.4%
|
|
| 3 | 3 |
1.4%
|
|
| 4 | 16 |
7.6%
|
|
| 5 | 21 |
10%
|
|
| 6 | 18 |
8.5%
|
|
| 7 | 36 |
17.1%
|
|
| 8 | 12 |
5.7%
|
|
| 9 | 14 |
6.6%
|
|
| 10 | Very effective | 12 |
5.7%
|
| 11 | Don't know | 73 |
34.6%
|
| Sysmiss | 9 |