| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
1.3%
|
|
| 1 | Not effective at all | 5 |
1.3%
|
| 2 | 0 |
0%
|
|
| 3 | 2 |
0.5%
|
|
| 4 | 7 |
1.8%
|
|
| 5 | 22 |
5.8%
|
|
| 6 | 34 |
8.9%
|
|
| 7 | 49 |
12.8%
|
|
| 8 | 52 |
13.6%
|
|
| 9 | 35 |
9.2%
|
|
| 10 | Very effective | 12 |
3.1%
|
| 11 | Don't know | 159 |
41.6%
|
| Sysmiss | 47 |