| Value | Category | Cases | |
|---|---|---|---|
| -99 | 67 |
22%
|
|
| 1 | Not effective at all | 16 |
5.2%
|
| 2 | 12 |
3.9%
|
|
| 3 | 15 |
4.9%
|
|
| 4 | 15 |
4.9%
|
|
| 5 | 16 |
5.2%
|
|
| 6 | 22 |
7.2%
|
|
| 7 | 15 |
4.9%
|
|
| 8 | 6 |
2%
|
|
| 9 | 4 |
1.3%
|
|
| 10 | Very effective | 42 |
13.8%
|
| 11 | Don't know | 75 |
24.6%
|
| Sysmiss | 70 |