| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
1.8%
|
| 2 | 4 |
0.9%
|
|
| 3 | 13 |
3%
|
|
| 4 | 14 |
3.2%
|
|
| 5 | 31 |
7%
|
|
| 6 | 39 |
8.9%
|
|
| 7 | 35 |
8%
|
|
| 8 | 47 |
10.7%
|
|
| 9 | 38 |
8.6%
|
|
| 10 | Very effective | 74 |
16.8%
|
| 11 | Don't know | 137 |
31.1%
|
| Sysmiss | 127 |