| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
1.9%
|
|
| 1 | Not effective at all | 13 |
5.1%
|
| 2 | 12 |
4.7%
|
|
| 3 | 32 |
12.5%
|
|
| 4 | 50 |
19.5%
|
|
| 5 | 24 |
9.3%
|
|
| 6 | 27 |
10.5%
|
|
| 7 | 13 |
5.1%
|
|
| 8 | 13 |
5.1%
|
|
| 9 | 12 |
4.7%
|
|
| 10 | Very effective | 9 |
3.5%
|
| 11 | Don't know | 47 |
18.3%
|
| Sysmiss | 3 |