| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.2%
|
| 2 | 2 |
1.1%
|
|
| 3 | 12 |
6.7%
|
|
| 4 | 8 |
4.5%
|
|
| 5 | 23 |
12.9%
|
|
| 6 | 26 |
14.6%
|
|
| 7 | 40 |
22.5%
|
|
| 8 | 20 |
11.2%
|
|
| 9 | 21 |
11.8%
|
|
| 10 | Very effective | 22 |
12.4%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 177 |