| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
1.3%
|
|
| 1 | Not effective at all | 7 |
1.8%
|
| 2 | 10 |
2.5%
|
|
| 3 | 17 |
4.3%
|
|
| 4 | 22 |
5.6%
|
|
| 5 | 37 |
9.4%
|
|
| 6 | 38 |
9.6%
|
|
| 7 | 40 |
10.1%
|
|
| 8 | 29 |
7.3%
|
|
| 9 | 21 |
5.3%
|
|
| 10 | Very effective | 19 |
4.8%
|
| 11 | Don't know | 150 |
38%
|
| Sysmiss | 12 |