| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
5.5%
|
| 2 | 4 |
1.5%
|
|
| 3 | 11 |
4%
|
|
| 4 | 10 |
3.7%
|
|
| 5 | 22 |
8.1%
|
|
| 6 | 10 |
3.7%
|
|
| 7 | 32 |
11.8%
|
|
| 8 | 20 |
7.4%
|
|
| 9 | 21 |
7.7%
|
|
| 10 | Very effective | 16 |
5.9%
|
| 11 | 111 |
40.8%
|
|
| Sysmiss | 35 |