| Value | Category | Cases | |
|---|---|---|---|
| -99 | 9 |
5.7%
|
|
| 1 | Not effective at all | 4 |
2.5%
|
| 2 | 2 |
1.3%
|
|
| 3 | 1 |
0.6%
|
|
| 4 | 3 |
1.9%
|
|
| 5 | 11 |
6.9%
|
|
| 6 | 14 |
8.8%
|
|
| 7 | 16 |
10.1%
|
|
| 8 | 9 |
5.7%
|
|
| 9 | 6 |
3.8%
|
|
| 10 | Very effective | 6 |
3.8%
|
| 11 | Don't know | 78 |
49.1%
|
| Sysmiss | 8 |