| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.2%
|
| 2 | 2 |
2.1%
|
|
| 3 | 3 |
3.2%
|
|
| 4 | 1 |
1.1%
|
|
| 5 | 5 |
5.3%
|
|
| 6 | 11 |
11.7%
|
|
| 7 | 17 |
18.1%
|
|
| 8 | 28 |
29.8%
|
|
| 9 | 7 |
7.4%
|
|
| 10 | Very effective | 17 |
18.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 13 |