| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.3%
|
| 2 | 11 |
2.8%
|
|
| 3 | 15 |
3.9%
|
|
| 4 | 28 |
7.2%
|
|
| 5 | 48 |
12.3%
|
|
| 6 | 48 |
12.3%
|
|
| 7 | 53 |
13.6%
|
|
| 8 | 72 |
18.5%
|
|
| 9 | 54 |
13.9%
|
|
| 10 | Very effective | 55 |
14.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 86 |