| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.1%
|
| 2 | 8 |
4.9%
|
|
| 3 | 8 |
4.9%
|
|
| 4 | 8 |
4.9%
|
|
| 5 | 8 |
4.9%
|
|
| 6 | 16 |
9.9%
|
|
| 7 | 10 |
6.2%
|
|
| 8 | 14 |
8.6%
|
|
| 9 | 18 |
11.1%
|
|
| 10 | Very effective | 6 |
3.7%
|
| 11 | Don't know | 5 |
3.1%
|
| 12 | Not applicable | 56 |
34.6%
|
| Sysmiss | 45 |