| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
0.6%
|
|
| 3 | 4 |
1.1%
|
|
| 4 | 5 |
1.4%
|
|
| 5 | 16 |
4.5%
|
|
| 6 | 24 |
6.8%
|
|
| 7 | 60 |
16.9%
|
|
| 8 | 120 |
33.8%
|
|
| 9 | 71 |
20%
|
|
| 10 | Very effective | 53 |
14.9%
|
| -99 | 20 | ||
| 11 | Don't know | 166 | |
| Sysmiss | 39 |