| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.3%
|
|
| 1 | Not effective at all | 2 |
0.6%
|
| 2 | 2 |
0.6%
|
|
| 3 | 0 |
0%
|
|
| 4 | 6 |
1.8%
|
|
| 5 | 11 |
3.3%
|
|
| 6 | 26 |
7.8%
|
|
| 7 | 74 |
22.2%
|
|
| 8 | 76 |
22.8%
|
|
| 9 | 27 |
8.1%
|
|
| 10 | Very effective | 19 |
5.7%
|
| 11 | Don't know | 89 |
26.7%
|
| Sysmiss | 7 |