| Value | Category | Cases | |
|---|---|---|---|
| -99 | 10 |
4.7%
|
|
| 1 | Not effective at all | 2 |
0.9%
|
| 2 | 6 |
2.8%
|
|
| 3 | 9 |
4.2%
|
|
| 4 | 11 |
5.1%
|
|
| 5 | 16 |
7.4%
|
|
| 6 | 15 |
7%
|
|
| 7 | 12 |
5.6%
|
|
| 8 | 20 |
9.3%
|
|
| 9 | 8 |
3.7%
|
|
| 10 | Very effective | 9 |
4.2%
|
| 11 | Don't know | 97 |
45.1%
|
| Sysmiss | 5 |