| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.3%
|
| 2 | 2 |
2.3%
|
|
| 3 | 1 |
1.2%
|
|
| 4 | 1 |
1.2%
|
|
| 5 | 1 |
1.2%
|
|
| 6 | 4 |
4.7%
|
|
| 7 | 3 |
3.5%
|
|
| 8 | 19 |
22.1%
|
|
| 9 | 30 |
34.9%
|
|
| 10 | Very effective | 23 |
26.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 78 |