| Value | Category | Cases | |
|---|---|---|---|
| -99 | 6 |
1.5%
|
|
| 1 | Not effective at all | 3 |
0.8%
|
| 2 | 12 |
3%
|
|
| 3 | 10 |
2.5%
|
|
| 4 | 23 |
5.8%
|
|
| 5 | 44 |
11%
|
|
| 6 | 34 |
8.5%
|
|
| 7 | 39 |
9.8%
|
|
| 8 | 31 |
7.8%
|
|
| 9 | 32 |
8%
|
|
| 10 | Very effective | 20 |
5%
|
| 11 | Don't know | 145 |
36.3%
|
| Sysmiss | 8 |