| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
3.5%
|
| 2 | 16 |
3.8%
|
|
| 3 | 43 |
10.1%
|
|
| 4 | 80 |
18.8%
|
|
| 5 | 99 |
23.2%
|
|
| 6 | 73 |
17.1%
|
|
| 7 | 57 |
13.4%
|
|
| 8 | 28 |
6.6%
|
|
| 9 | 4 |
0.9%
|
|
| 10 | Very effective | 11 |
2.6%
|
| 11 | Don't know | 49 | |
| Sysmiss | 3 |