| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 5 | 2 |
1.8%
|
|
| 6 | 11 |
9.8%
|
|
| 7 | 19 |
17%
|
|
| 8 | 36 |
32.1%
|
|
| 9 | 24 |
21.4%
|
|
| 10 | Very effective | 20 |
17.9%
|
| -99 | 4 | ||
| 11 | Don't know | 34 | |
| Sysmiss | 7 |