| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
6.3%
|
| 2 | 3 |
4.7%
|
|
| 3 | 3 |
4.7%
|
|
| 4 | 3 |
4.7%
|
|
| 5 | 5 |
7.8%
|
|
| 6 | 11 |
17.2%
|
|
| 7 | 9 |
14.1%
|
|
| 8 | 16 |
25%
|
|
| 9 | 5 |
7.8%
|
|
| 10 | Very effective | 5 |
7.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 102 |