| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
3.6%
|
|
| 1 | Not effective at all | 4 |
4.8%
|
| 2 | 7 |
8.4%
|
|
| 3 | 6 |
7.2%
|
|
| 4 | 2 |
2.4%
|
|
| 5 | 13 |
15.7%
|
|
| 6 | 8 |
9.6%
|
|
| 7 | 4 |
4.8%
|
|
| 8 | 3 |
3.6%
|
|
| 9 | 6 |
7.2%
|
|
| 10 | Very effective | 5 |
6%
|
| 11 | Don't know | 22 |
26.5%
|
| Sysmiss | 11 |