| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.3%
|
|
| 1 | Not effective at all | 17 |
5.7%
|
| 2 | 21 |
7%
|
|
| 3 | 23 |
7.7%
|
|
| 4 | 21 |
7%
|
|
| 5 | 28 |
9.4%
|
|
| 6 | 20 |
6.7%
|
|
| 7 | 21 |
7%
|
|
| 8 | 16 |
5.4%
|
|
| 9 | 10 |
3.3%
|
|
| 10 | Very effective | 24 |
8%
|
| 11 | Don't know | 97 |
32.4%
|
| Sysmiss | 27 |