| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 1 |
0.3%
|
|
| 4 | 10 |
2.7%
|
|
| 5 | 37 |
9.9%
|
|
| 6 | 75 |
20.2%
|
|
| 7 | 88 |
23.7%
|
|
| 8 | 81 |
21.8%
|
|
| 9 | 46 |
12.4%
|
|
| 10 | Very effective | 34 |
9.1%
|
| 11 | Don't know | 32 | |
| Sysmiss | 19 |