| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1%
|
| 2 | 1 |
0.3%
|
|
| 3 | 13 |
4.2%
|
|
| 4 | 16 |
5.2%
|
|
| 5 | 54 |
17.5%
|
|
| 6 | 44 |
14.2%
|
|
| 7 | 70 |
22.7%
|
|
| 8 | 69 |
22.3%
|
|
| 9 | 27 |
8.7%
|
|
| 10 | Very effective | 12 |
3.9%
|
| 11 | Don't know | 46 | |
| Sysmiss | 11 |