| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 5 | 5 |
6.3%
|
|
| 6 | 8 |
10%
|
|
| 7 | 14 |
17.5%
|
|
| 8 | 28 |
35%
|
|
| 9 | 13 |
16.3%
|
|
| 10 | Very effective | 12 |
15%
|
| -99 | 4 | ||
| 11 | Don't know | 65 | |
| Sysmiss | 8 |