| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1.3%
|
|
| 1 | Not effective at all | 8 |
2.6%
|
| 2 | 9 |
2.9%
|
|
| 3 | 16 |
5.2%
|
|
| 4 | 19 |
6.2%
|
|
| 5 | 31 |
10.1%
|
|
| 6 | 38 |
12.4%
|
|
| 7 | 30 |
9.8%
|
|
| 8 | 31 |
10.1%
|
|
| 9 | 28 |
9.1%
|
|
| 10 | Very effective | 33 |
10.7%
|
| 11 | 60 |
19.5%
|
|
| Sysmiss | 3 |