| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 25 |
7.3%
|
| 2 | 28 |
8.2%
|
|
| 3 | 58 |
17%
|
|
| 4 | 68 |
19.9%
|
|
| 5 | 92 |
27%
|
|
| 6 | 35 |
10.3%
|
|
| 7 | 17 |
5%
|
|
| 8 | 13 |
3.8%
|
|
| 9 | 2 |
0.6%
|
|
| 10 | Very effective | 3 |
0.9%
|
| 11 | Don't know | 135 | |
| Sysmiss | 2 |