| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
4.1%
|
| 2 | 5 |
10.2%
|
|
| 3 | 2 |
4.1%
|
|
| 4 | 12 |
24.5%
|
|
| 5 | 10 |
20.4%
|
|
| 6 | 11 |
22.4%
|
|
| 7 | 5 |
10.2%
|
|
| 9 | 1 |
2%
|
|
| 10 | Very effective | 1 |
2%
|
| 11 | Don't know | 63 | |
| Sysmiss | 22 |