| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.7%
|
| 2 | 2 |
1.7%
|
|
| 3 | 4 |
3.4%
|
|
| 4 | 6 |
5.1%
|
|
| 5 | 19 |
16.1%
|
|
| 6 | 18 |
15.3%
|
|
| 7 | 27 |
22.9%
|
|
| 8 | 23 |
19.5%
|
|
| 9 | 11 |
9.3%
|
|
| 10 | Very effective | 6 |
5.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 73 |