| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.3%
|
| 2 | 7 |
3.1%
|
|
| 3 | 8 |
3.5%
|
|
| 4 | 13 |
5.8%
|
|
| 5 | 29 |
12.8%
|
|
| 6 | 37 |
16.4%
|
|
| 7 | 53 |
23.5%
|
|
| 8 | 38 |
16.8%
|
|
| 9 | 19 |
8.4%
|
|
| 10 | Very effective | 19 |
8.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 214 |