| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.7%
|
| 2 | 5 |
4.6%
|
|
| 3 | 7 |
6.5%
|
|
| 4 | 5 |
4.6%
|
|
| 5 | 23 |
21.3%
|
|
| 6 | 18 |
16.7%
|
|
| 7 | 21 |
19.4%
|
|
| 8 | 17 |
15.7%
|
|
| 9 | 3 |
2.8%
|
|
| 10 | Very effective | 5 |
4.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 146 |