| Value | Category | Cases | |
|---|---|---|---|
| -99 | 8 |
3.1%
|
|
| 1 | Not effective at all | 8 |
3.1%
|
| 2 | 12 |
4.7%
|
|
| 3 | 22 |
8.5%
|
|
| 4 | 19 |
7.4%
|
|
| 5 | 56 |
21.7%
|
|
| 6 | 27 |
10.5%
|
|
| 7 | 23 |
8.9%
|
|
| 8 | 18 |
7%
|
|
| 9 | 7 |
2.7%
|
|
| 10 | Very effective | 9 |
3.5%
|
| 11 | Don't know | 49 |
19%
|
| Sysmiss | 2 |