| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
2.2%
|
|
| 1 | Not effective at all | 1 |
1.1%
|
| 2 | 8 |
8.8%
|
|
| 3 | 8 |
8.8%
|
|
| 4 | 6 |
6.6%
|
|
| 5 | 8 |
8.8%
|
|
| 6 | 7 |
7.7%
|
|
| 7 | 14 |
15.4%
|
|
| 8 | 6 |
6.6%
|
|
| 9 | 3 |
3.3%
|
|
| 10 | Very effective | 6 |
6.6%
|
| 11 | Don't know | 22 |
24.2%
|
| Sysmiss | 3 |