| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
4.3%
|
| 2 | 4 |
1.9%
|
|
| 3 | 15 |
7.2%
|
|
| 4 | 28 |
13.4%
|
|
| 5 | 28 |
13.4%
|
|
| 6 | 32 |
15.3%
|
|
| 7 | 20 |
9.6%
|
|
| 8 | 18 |
8.6%
|
|
| 9 | 8 |
3.8%
|
|
| 10 | Very effective | 8 |
3.8%
|
| 11 | Don't know | 39 |
18.7%
|
| Sysmiss | 16 |