| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
2.1%
|
| 2 | 10 |
1.7%
|
|
| 3 | 18 |
3%
|
|
| 4 | 27 |
4.5%
|
|
| 5 | 48 |
7.9%
|
|
| 6 | 45 |
7.4%
|
|
| 7 | 46 |
7.6%
|
|
| 8 | 54 |
8.9%
|
|
| 9 | 40 |
6.6%
|
|
| 10 | Very effective | 31 |
5.1%
|
| 11 | Don't know | 226 |
37.3%
|
| Sysmiss | 48 |
7.9%
|