| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
0.6%
|
| 2 | 11 |
2.1%
|
|
| 3 | 47 |
9.1%
|
|
| 4 | 71 |
13.8%
|
|
| 5 | 92 |
17.9%
|
|
| 6 | 93 |
18.1%
|
|
| 7 | 79 |
15.3%
|
|
| 8 | 73 |
14.2%
|
|
| 9 | 28 |
5.4%
|
|
| 10 | Very effective | 18 |
3.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 48 |