| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
0.7%
|
|
| 1 | Not effective at all | 11 |
1.8%
|
| 2 | 11 |
1.8%
|
|
| 3 | 19 |
3.1%
|
|
| 4 | 27 |
4.4%
|
|
| 5 | 70 |
11.5%
|
|
| 6 | 67 |
11%
|
|
| 7 | 73 |
11.9%
|
|
| 8 | 66 |
10.8%
|
|
| 9 | 37 |
6.1%
|
|
| 10 | Very effective | 22 |
3.6%
|
| 11 | Don't know | 204 |
33.4%
|
| Sysmiss | 13 |