| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
3.2%
|
|
| 1 | Not effective at all | 1 |
0.6%
|
| 2 | 2 |
1.3%
|
|
| 3 | 5 |
3.2%
|
|
| 4 | 9 |
5.7%
|
|
| 5 | 12 |
7.6%
|
|
| 6 | 21 |
13.3%
|
|
| 7 | 22 |
13.9%
|
|
| 8 | 22 |
13.9%
|
|
| 9 | 13 |
8.2%
|
|
| 10 | Very effective | 9 |
5.7%
|
| 11 | Don't know | 37 |
23.4%
|
| Sysmiss | 9 |