| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1%
|
|
| 1 | Not effective at all | 3 |
0.8%
|
| 2 | 2 |
0.5%
|
|
| 3 | 5 |
1.3%
|
|
| 4 | 5 |
1.3%
|
|
| 5 | 20 |
5.2%
|
|
| 6 | 25 |
6.5%
|
|
| 7 | 55 |
14.4%
|
|
| 8 | 66 |
17.2%
|
|
| 9 | 30 |
7.8%
|
|
| 10 | Very effective | 21 |
5.5%
|
| 11 | Don't know | 147 |
38.4%
|
| Sysmiss | 46 |