| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
4.9%
|
| 2 | 4 |
3.9%
|
|
| 3 | 4 |
3.9%
|
|
| 4 | 6 |
5.8%
|
|
| 5 | 21 |
20.4%
|
|
| 6 | 18 |
17.5%
|
|
| 7 | 21 |
20.4%
|
|
| 8 | 15 |
14.6%
|
|
| 9 | 6 |
5.8%
|
|
| 10 | Very effective | 3 |
2.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 151 |