| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
0.8%
|
|
| 1 | Not effective at all | 7 |
1.8%
|
| 2 | 10 |
2.5%
|
|
| 3 | 12 |
3%
|
|
| 4 | 24 |
6%
|
|
| 5 | 47 |
11.8%
|
|
| 6 | 41 |
10.3%
|
|
| 7 | 40 |
10%
|
|
| 8 | 42 |
10.5%
|
|
| 9 | 30 |
7.5%
|
|
| 10 | Very effective | 15 |
3.8%
|
| 11 | Don't know | 128 |
32.1%
|
| Sysmiss | 8 |