| Value | Category | Cases | |
|---|---|---|---|
| -99 | 9 |
3.2%
|
|
| 1 | Not effective at all | 1 |
0.4%
|
| 2 | 0 |
0%
|
|
| 3 | 6 |
2.2%
|
|
| 4 | 15 |
5.4%
|
|
| 5 | 14 |
5%
|
|
| 6 | 21 |
7.6%
|
|
| 7 | 42 |
15.1%
|
|
| 8 | 49 |
17.6%
|
|
| 9 | 20 |
7.2%
|
|
| 10 | Very effective | 22 |
7.9%
|
| 11 | Don't know | 79 |
28.4%
|
| Sysmiss | 1 |