| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
4.4%
|
| 2 | 3 |
1.9%
|
|
| 3 | 11 |
6.9%
|
|
| 4 | 4 |
2.5%
|
|
| 5 | 15 |
9.4%
|
|
| 6 | 16 |
10.1%
|
|
| 7 | 10 |
6.3%
|
|
| 8 | 16 |
10.1%
|
|
| 9 | 17 |
10.7%
|
|
| 10 | Very effective | 15 |
9.4%
|
| 11 | Don't know | 45 |
28.3%
|
| 12 | Not applicable | 0 |
0%
|
| Sysmiss | 48 |