| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.8%
|
| 2 | 1 |
0.8%
|
|
| 3 | 5 |
4%
|
|
| 4 | 9 |
7.2%
|
|
| 5 | 21 |
16.8%
|
|
| 6 | 24 |
19.2%
|
|
| 7 | 21 |
16.8%
|
|
| 8 | 28 |
22.4%
|
|
| 9 | 12 |
9.6%
|
|
| 10 | Very effective | 3 |
2.4%
|
| -99 | 7 | ||
| 11 | Don't know | 102 | |
| Sysmiss | 26 |