| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1.5%
|
|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 7 |
2.6%
|
|
| 3 | 14 |
5.2%
|
|
| 4 | 29 |
10.9%
|
|
| 5 | 36 |
13.5%
|
|
| 6 | 35 |
13.1%
|
|
| 7 | 38 |
14.2%
|
|
| 8 | 32 |
12%
|
|
| 9 | 17 |
6.4%
|
|
| 10 | Very effective | 11 |
4.1%
|
| 11 | Don't know | 42 |
15.7%
|
| Sysmiss | 4 |