| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1.5%
|
|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 5 |
1.9%
|
|
| 3 | 21 |
7.8%
|
|
| 4 | 28 |
10.4%
|
|
| 5 | 35 |
13.1%
|
|
| 6 | 33 |
12.3%
|
|
| 7 | 36 |
13.4%
|
|
| 8 | 33 |
12.3%
|
|
| 9 | 13 |
4.9%
|
|
| 10 | Very effective | 15 |
5.6%
|
| 11 | Don't know | 45 |
16.8%
|
| Sysmiss | 3 |