| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
3.4%
|
|
| 1 | Not effective at all | 2 |
1.4%
|
| 2 | 3 |
2.1%
|
|
| 3 | 2 |
1.4%
|
|
| 4 | 2 |
1.4%
|
|
| 5 | 8 |
5.5%
|
|
| 6 | 10 |
6.9%
|
|
| 7 | 9 |
6.2%
|
|
| 8 | 14 |
9.7%
|
|
| 9 | 11 |
7.6%
|
|
| 10 | Very effective | 7 |
4.8%
|
| 11 | Don't know | 72 |
49.7%
|
| Sysmiss | 10 |