| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.4%
|
| 2 | 4 |
6.8%
|
|
| 3 | 15 |
25.4%
|
|
| 4 | 6 |
10.2%
|
|
| 5 | 5 |
8.5%
|
|
| 6 | 13 |
22%
|
|
| 7 | 7 |
11.9%
|
|
| 8 | 5 |
8.5%
|
|
| 9 | 1 |
1.7%
|
|
| 10 | Very effective | 1 |
1.7%
|
| 11 | Don't know | 52 | |
| Sysmiss | 23 |