| Value | Category | Cases | |
|---|---|---|---|
| -99 | 14 |
7.2%
|
|
| 1 | Not effective at all | 5 |
2.6%
|
| 2 | 5 |
2.6%
|
|
| 3 | 3 |
1.5%
|
|
| 4 | 11 |
5.7%
|
|
| 5 | 21 |
10.8%
|
|
| 6 | 17 |
8.8%
|
|
| 7 | 29 |
14.9%
|
|
| 8 | 23 |
11.9%
|
|
| 9 | 7 |
3.6%
|
|
| 10 | Very effective | 3 |
1.5%
|
| 11 | 56 |
28.9%
|
|
| Sysmiss | 9 |