| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.8%
|
|
| 1 | Not effective at all | 3 |
1.1%
|
| 2 | 5 |
1.9%
|
|
| 3 | 13 |
4.9%
|
|
| 4 | 24 |
9%
|
|
| 5 | 44 |
16.5%
|
|
| 6 | 33 |
12.4%
|
|
| 7 | 45 |
16.9%
|
|
| 8 | 27 |
10.2%
|
|
| 9 | 7 |
2.6%
|
|
| 10 | Very effective | 12 |
4.5%
|
| 11 | Don't know | 51 |
19.2%
|
| Sysmiss | 5 |