| Value | Category | Cases | |
|---|---|---|---|
| -99 | 9 |
3.8%
|
|
| 1 | Not effective at all | 4 |
1.7%
|
| 2 | 2 |
0.9%
|
|
| 3 | 2 |
0.9%
|
|
| 4 | 1 |
0.4%
|
|
| 5 | 11 |
4.7%
|
|
| 6 | 14 |
6%
|
|
| 7 | 13 |
5.6%
|
|
| 8 | 30 |
12.8%
|
|
| 9 | 27 |
11.5%
|
|
| 10 | Very effective | 15 |
6.4%
|
| 11 | 106 |
45.3%
|
|
| Sysmiss | 26 |