| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
4.7%
|
| 2 | 12 |
4.7%
|
|
| 3 | 11 |
4.3%
|
|
| 4 | 16 |
6.3%
|
|
| 5 | 28 |
11%
|
|
| 6 | 27 |
10.6%
|
|
| 7 | 32 |
12.5%
|
|
| 8 | 30 |
11.8%
|
|
| 9 | 12 |
4.7%
|
|
| 10 | Very effective | 21 |
8.2%
|
| 11 | 54 |
21.2%
|
|
| Sysmiss | 9 |