| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.3%
|
| 2 | 12 |
3.1%
|
|
| 3 | 11 |
2.8%
|
|
| 4 | 17 |
4.4%
|
|
| 5 | 32 |
8.3%
|
|
| 6 | 64 |
16.6%
|
|
| 7 | 83 |
21.5%
|
|
| 8 | 72 |
18.7%
|
|
| 9 | 43 |
11.1%
|
|
| 10 | Very effective | 47 |
12.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 54 |