| Value | Category | Cases | |
|---|---|---|---|
| -99 | 15 |
4.5%
|
|
| 1 | Not effective at all | 32 |
9.6%
|
| 2 | 27 |
8.1%
|
|
| 3 | 18 |
5.4%
|
|
| 4 | 18 |
5.4%
|
|
| 5 | 29 |
8.7%
|
|
| 6 | 21 |
6.3%
|
|
| 7 | 22 |
6.6%
|
|
| 8 | 18 |
5.4%
|
|
| 9 | 19 |
5.7%
|
|
| 10 | Very effective | 80 |
24%
|
| 11 | Don't know | 34 |
10.2%
|
| Sysmiss | 42 |