| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.9%
|
| 2 | 2 |
1.3%
|
|
| 3 | 4 |
2.5%
|
|
| 4 | 5 |
3.1%
|
|
| 5 | 19 |
11.9%
|
|
| 6 | 25 |
15.7%
|
|
| 7 | 35 |
22%
|
|
| 8 | 42 |
26.4%
|
|
| 9 | 18 |
11.3%
|
|
| 10 | Very effective | 6 |
3.8%
|
| 11 | Don't know | 78 | |
| Sysmiss | 32 |