| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
3.6%
|
| 2 | 12 |
3.3%
|
|
| 3 | 22 |
6.1%
|
|
| 4 | 30 |
8.3%
|
|
| 5 | 41 |
11.3%
|
|
| 6 | 57 |
15.7%
|
|
| 7 | 70 |
19.3%
|
|
| 8 | 60 |
16.5%
|
|
| 9 | 33 |
9.1%
|
|
| 10 | Very effective | 25 |
6.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 112 |