| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
1.6%
|
| 2 | 3 |
0.7%
|
|
| 3 | 9 |
2.1%
|
|
| 4 | 14 |
3.2%
|
|
| 5 | 29 |
6.7%
|
|
| 6 | 36 |
8.3%
|
|
| 7 | 38 |
8.8%
|
|
| 8 | 38 |
8.8%
|
|
| 9 | 19 |
4.4%
|
|
| 10 | Very effective | 65 |
15%
|
| 11 | Don't know | 175 |
40.4%
|
| Sysmiss | 134 |