| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 4 |
1.3%
|
|
| 4 | 4 |
1.3%
|
|
| 5 | 24 |
7.7%
|
|
| 6 | 28 |
8.9%
|
|
| 7 | 62 |
19.8%
|
|
| 8 | 103 |
32.9%
|
|
| 9 | 46 |
14.7%
|
|
| 10 | Very effective | 41 |
13.1%
|
| -99 | 24 | ||
| 11 | Don't know | 205 | |
| Sysmiss | 38 |