| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.5%
|
| 2 | 6 |
3%
|
|
| 3 | 2 |
1%
|
|
| 4 | 12 |
6%
|
|
| 5 | 27 |
13.4%
|
|
| 6 | 18 |
9%
|
|
| 7 | 21 |
10.4%
|
|
| 8 | 27 |
13.4%
|
|
| 9 | 31 |
15.4%
|
|
| 10 | Very effective | 54 |
26.9%
|
| -99 | 11 | ||
| 11 | Don't know | 89 | |
| Sysmiss | 51 |