| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.7%
|
| 2 | 1 |
0.9%
|
|
| 3 | 6 |
5.5%
|
|
| 4 | 13 |
11.9%
|
|
| 5 | 19 |
17.4%
|
|
| 6 | 21 |
19.3%
|
|
| 7 | 13 |
11.9%
|
|
| 8 | 26 |
23.9%
|
|
| 9 | 5 |
4.6%
|
|
| 10 | Very effective | 1 |
0.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 82 |