| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.8%
|
| 2 | 4 |
3.1%
|
|
| 3 | 8 |
6.3%
|
|
| 4 | 5 |
3.9%
|
|
| 5 | 20 |
15.7%
|
|
| 6 | 21 |
16.5%
|
|
| 7 | 19 |
15%
|
|
| 8 | 28 |
22%
|
|
| 9 | 8 |
6.3%
|
|
| 10 | Very effective | 13 |
10.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 152 |