| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
1.7%
|
|
| 3 | 6 |
3.4%
|
|
| 4 | 8 |
4.5%
|
|
| 5 | 19 |
10.8%
|
|
| 6 | 25 |
14.2%
|
|
| 7 | 47 |
26.7%
|
|
| 8 | 52 |
29.5%
|
|
| 9 | 12 |
6.8%
|
|
| 10 | Very effective | 4 |
2.3%
|
| 11 | Don't know | 170 | |
| Sysmiss | 14 |