| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1.7%
|
|
| 1 | Not effective at all | 8 |
3.4%
|
| 2 | 4 |
1.7%
|
|
| 3 | 5 |
2.1%
|
|
| 4 | 3 |
1.3%
|
|
| 5 | 10 |
4.3%
|
|
| 6 | 10 |
4.3%
|
|
| 7 | 23 |
9.8%
|
|
| 8 | 46 |
19.7%
|
|
| 9 | 16 |
6.8%
|
|
| 10 | Very effective | 18 |
7.7%
|
| 11 | 87 |
37.2%
|
|
| Sysmiss | 26 |