| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.6%
|
|
| 3 | 12 |
7.8%
|
|
| 4 | 17 |
11%
|
|
| 5 | 35 |
22.7%
|
|
| 6 | 45 |
29.2%
|
|
| 7 | 19 |
12.3%
|
|
| 8 | 14 |
9.1%
|
|
| 9 | 10 |
6.5%
|
|
| 10 | Very effective | 1 |
0.6%
|
| 11 | Don't know | 17 | |
| Sysmiss | 32 |