| Value | Category | Cases | |
|---|---|---|---|
| -99 | 7 |
4.6%
|
|
| 1 | Not effective at all | 4 |
2.6%
|
| 2 | 3 |
2%
|
|
| 3 | 3 |
2%
|
|
| 4 | 9 |
6%
|
|
| 5 | 15 |
9.9%
|
|
| 6 | 21 |
13.9%
|
|
| 7 | 16 |
10.6%
|
|
| 8 | 4 |
2.6%
|
|
| 9 | 8 |
5.3%
|
|
| 10 | Very effective | 13 |
8.6%
|
| 11 | Don't know | 48 |
31.8%
|
| Sysmiss | 1 |