| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
3.8%
|
| 2 | 13 |
4.2%
|
|
| 3 | 9 |
2.9%
|
|
| 4 | 12 |
3.8%
|
|
| 5 | 26 |
8.3%
|
|
| 6 | 40 |
12.8%
|
|
| 7 | 40 |
12.8%
|
|
| 8 | 27 |
8.6%
|
|
| 9 | 39 |
12.5%
|
|
| 10 | Very effective | 32 |
10.2%
|
| 11 | 63 |
20.1%
|
|
| Sysmiss | 14 |