| Value | Category | Cases | |
|---|---|---|---|
| -99 | 74 |
24.1%
|
|
| 1 | Not effective at all | 24 |
7.8%
|
| 2 | 13 |
4.2%
|
|
| 3 | 12 |
3.9%
|
|
| 4 | 14 |
4.6%
|
|
| 5 | 12 |
3.9%
|
|
| 6 | 19 |
6.2%
|
|
| 7 | 22 |
7.2%
|
|
| 8 | 12 |
3.9%
|
|
| 9 | 13 |
4.2%
|
|
| 10 | Very effective | 66 |
21.5%
|
| 11 | Don't know | 26 |
8.5%
|
| Sysmiss | 68 |