| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.6%
|
|
| 1 | Not effective at all | 5 |
1.5%
|
| 2 | 0 |
0%
|
|
| 3 | 6 |
1.8%
|
|
| 4 | 11 |
3.3%
|
|
| 5 | 17 |
5.1%
|
|
| 6 | 27 |
8.1%
|
|
| 7 | 60 |
17.9%
|
|
| 8 | 45 |
13.4%
|
|
| 9 | 28 |
8.4%
|
|
| 10 | Very effective | 17 |
5.1%
|
| 11 | Don't know | 117 |
34.9%
|
| Sysmiss | 5 |