| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.6%
|
| 2 | 5 |
4.1%
|
|
| 3 | 14 |
11.4%
|
|
| 4 | 19 |
15.4%
|
|
| 5 | 19 |
15.4%
|
|
| 6 | 12 |
9.8%
|
|
| 7 | 23 |
18.7%
|
|
| 8 | 17 |
13.8%
|
|
| 9 | 11 |
8.9%
|
|
| 10 | Very effective | 1 |
0.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 252 |