| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
7.8%
|
| 2 | 11 |
7.2%
|
|
| 3 | 21 |
13.7%
|
|
| 4 | 24 |
15.7%
|
|
| 5 | 27 |
17.6%
|
|
| 6 | 14 |
9.2%
|
|
| 7 | 19 |
12.4%
|
|
| 8 | 19 |
12.4%
|
|
| 9 | 4 |
2.6%
|
|
| 10 | Very effective | 2 |
1.3%
|
| 11 | Don't know | 40 | |
| Sysmiss | 5 |