| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
0.6%
|
|
| 3 | 3 |
0.9%
|
|
| 4 | 4 |
1.2%
|
|
| 5 | 22 |
6.6%
|
|
| 6 | 44 |
13.3%
|
|
| 7 | 88 |
26.6%
|
|
| 8 | 90 |
27.2%
|
|
| 9 | 47 |
14.2%
|
|
| 10 | Very effective | 31 |
9.4%
|
| -99 | 26 | ||
| 11 | Don't know | 183 | |
| Sysmiss | 40 |