| Value | Category | Cases | |
|---|---|---|---|
| -99 | 13 |
2.7%
|
|
| 1 | Not effective at all | 8 |
1.6%
|
| 2 | 6 |
1.2%
|
|
| 3 | 26 |
5.4%
|
|
| 4 | 37 |
7.6%
|
|
| 5 | 49 |
10.1%
|
|
| 6 | 69 |
14.2%
|
|
| 7 | 66 |
13.6%
|
|
| 8 | 41 |
8.5%
|
|
| 9 | 26 |
5.4%
|
|
| 10 | Very effective | 15 |
3.1%
|
| 11 | 129 |
26.6%
|
|
| Sysmiss | 12 |