| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
4.3%
|
| 3 | 9 |
9.8%
|
|
| 4 | 3 |
3.3%
|
|
| 5 | 3 |
3.3%
|
|
| 6 | 10 |
10.9%
|
|
| 7 | 19 |
20.7%
|
|
| 8 | 24 |
26.1%
|
|
| 9 | 15 |
16.3%
|
|
| 10 | Very effective | 5 |
5.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 108 |