| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.5%
|
| 2 | 6 |
10.5%
|
|
| 3 | 9 |
15.8%
|
|
| 4 | 5 |
8.8%
|
|
| 5 | 10 |
17.5%
|
|
| 6 | 12 |
21.1%
|
|
| 7 | 3 |
5.3%
|
|
| 8 | 8 |
14%
|
|
| 9 | 2 |
3.5%
|
|
| 10 | Very effective | 0 |
0%
|
| -99 | 7 | ||
| 11 | Don't know | 170 | |
| Sysmiss | 26 |