| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.9%
|
| 2 | 5 |
4.3%
|
|
| 3 | 7 |
6%
|
|
| 4 | 7 |
6%
|
|
| 5 | 18 |
15.4%
|
|
| 6 | 17 |
14.5%
|
|
| 7 | 24 |
20.5%
|
|
| 8 | 22 |
18.8%
|
|
| 9 | 14 |
12%
|
|
| 10 | Very effective | 2 |
1.7%
|
| -99 | 6 | ||
| 11 | Don't know | 114 | |
| Sysmiss | 23 |