| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.4%
|
| 2 | 8 |
2.7%
|
|
| 3 | 11 |
3.7%
|
|
| 4 | 20 |
6.8%
|
|
| 5 | 44 |
14.9%
|
|
| 6 | 37 |
12.5%
|
|
| 7 | 35 |
11.8%
|
|
| 8 | 19 |
6.4%
|
|
| 9 | 15 |
5.1%
|
|
| 10 | Very effective | 8 |
2.7%
|
| 11 | Don't know | 95 |
32.1%
|
| Sysmiss | 5 |