| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
2.2%
|
|
| 1 | Not effective at all | 4 |
4.4%
|
| 2 | 13 |
14.3%
|
|
| 3 | 5 |
5.5%
|
|
| 4 | 4 |
4.4%
|
|
| 5 | 9 |
9.9%
|
|
| 6 | 7 |
7.7%
|
|
| 7 | 9 |
9.9%
|
|
| 8 | 5 |
5.5%
|
|
| 9 | 7 |
7.7%
|
|
| 10 | Very effective | 5 |
5.5%
|
| 11 | Don't know | 21 |
23.1%
|
| Sysmiss | 3 |