| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.1%
|
| 2 | 4 |
1.4%
|
|
| 3 | 8 |
2.8%
|
|
| 4 | 13 |
4.5%
|
|
| 5 | 25 |
8.7%
|
|
| 6 | 18 |
6.3%
|
|
| 7 | 25 |
8.7%
|
|
| 8 | 15 |
5.2%
|
|
| 9 | 16 |
5.6%
|
|
| 10 | Very effective | 11 |
3.8%
|
| 11 | Don't know | 145 |
50.7%
|
| Sysmiss | 17 |