| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1.6%
|
|
| 1 | Not effective at all | 14 |
5.5%
|
| 2 | 22 |
8.6%
|
|
| 3 | 31 |
12.1%
|
|
| 4 | 38 |
14.8%
|
|
| 5 | 24 |
9.4%
|
|
| 6 | 24 |
9.4%
|
|
| 7 | 20 |
7.8%
|
|
| 8 | 12 |
4.7%
|
|
| 9 | 12 |
4.7%
|
|
| 10 | Very effective | 6 |
2.3%
|
| 11 | Don't know | 49 |
19.1%
|
| Sysmiss | 4 |