| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
1.4%
|
|
| 1 | Not effective at all | 5 |
3.5%
|
| 2 | 8 |
5.6%
|
|
| 3 | 13 |
9%
|
|
| 4 | 12 |
8.3%
|
|
| 5 | 15 |
10.4%
|
|
| 6 | 15 |
10.4%
|
|
| 7 | 11 |
7.6%
|
|
| 8 | 15 |
10.4%
|
|
| 9 | 4 |
2.8%
|
|
| 10 | Very effective | 8 |
5.6%
|
| 11 | Don't know | 36 |
25%
|
| Sysmiss | 8 |