| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1%
|
|
| 1 | Not effective at all | 2 |
0.5%
|
| 2 | 0 |
0%
|
|
| 3 | 5 |
1.3%
|
|
| 4 | 6 |
1.6%
|
|
| 5 | 20 |
5.2%
|
|
| 6 | 29 |
7.6%
|
|
| 7 | 42 |
11%
|
|
| 8 | 74 |
19.4%
|
|
| 9 | 47 |
12.3%
|
|
| 10 | Very effective | 20 |
5.2%
|
| 11 | Don't know | 132 |
34.6%
|
| Sysmiss | 48 |