| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
1.4%
|
|
| 1 | Not effective at all | 5 |
3.5%
|
| 2 | 7 |
4.9%
|
|
| 3 | 10 |
7%
|
|
| 4 | 7 |
4.9%
|
|
| 5 | 10 |
7%
|
|
| 6 | 11 |
7.7%
|
|
| 7 | 6 |
4.2%
|
|
| 8 | 15 |
10.5%
|
|
| 9 | 3 |
2.1%
|
|
| 10 | Very effective | 9 |
6.3%
|
| 11 | Don't know | 58 |
40.6%
|
| Sysmiss | 9 |