| Value | Category | Cases | |
|---|---|---|---|
| -99 | 21 |
2.9%
|
|
| 1 | Not effective at all | 29 |
3.9%
|
| 2 | 28 |
3.8%
|
|
| 3 | 51 |
6.9%
|
|
| 4 | 62 |
8.4%
|
|
| 5 | 94 |
12.8%
|
|
| 6 | 107 |
14.5%
|
|
| 7 | 100 |
13.6%
|
|
| 8 | 91 |
12.4%
|
|
| 9 | 35 |
4.8%
|
|
| 10 | Very effective | 40 |
5.4%
|
| 11 | 78 |
10.6%
|
|
| Sysmiss | 15 |