| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.6%
|
|
| 3 | 0 |
0%
|
|
| 4 | 2 |
1.3%
|
|
| 5 | 13 |
8.4%
|
|
| 6 | 16 |
10.4%
|
|
| 7 | 15 |
9.7%
|
|
| 8 | 14 |
9.1%
|
|
| 9 | 8 |
5.2%
|
|
| 10 | Very effective | 6 |
3.9%
|
| 11 | Don't know | 79 |
51.3%
|
| Sysmiss | 5 |