| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.5%
|
|
| 1 | Not effective at all | 3 |
1.5%
|
| 2 | 8 |
4%
|
|
| 3 | 8 |
4%
|
|
| 4 | 24 |
11.9%
|
|
| 5 | 26 |
12.9%
|
|
| 6 | 24 |
11.9%
|
|
| 7 | 32 |
15.8%
|
|
| 8 | 20 |
9.9%
|
|
| 9 | 17 |
8.4%
|
|
| 10 | Very effective | 4 |
2%
|
| 11 | Don't know | 35 |
17.3%
|
| Sysmiss | 23 |