| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
0.7%
|
| 2 | 6 |
1%
|
|
| 3 | 15 |
2.5%
|
|
| 4 | 16 |
2.6%
|
|
| 5 | 23 |
3.8%
|
|
| 6 | 38 |
6.3%
|
|
| 7 | 50 |
8.3%
|
|
| 8 | 57 |
9.4%
|
|
| 9 | 48 |
7.9%
|
|
| 10 | Very effective | 37 |
6.1%
|
| 11 | Don't know | 275 |
45.4%
|
| Sysmiss | 37 |
6.1%
|