| Value | Category | Cases | |
|---|---|---|---|
| -99 | 13 |
6.7%
|
|
| 1 | Not effective at all | 6 |
3.1%
|
| 2 | 7 |
3.6%
|
|
| 3 | 6 |
3.1%
|
|
| 4 | 17 |
8.8%
|
|
| 5 | 21 |
10.8%
|
|
| 6 | 17 |
8.8%
|
|
| 7 | 15 |
7.7%
|
|
| 8 | 15 |
7.7%
|
|
| 9 | 4 |
2.1%
|
|
| 10 | Very effective | 2 |
1%
|
| 11 | 71 |
36.6%
|
|
| Sysmiss | 9 |