| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
11.4%
|
| 2 | 3 |
6.8%
|
|
| 3 | 2 |
4.5%
|
|
| 4 | 2 |
4.5%
|
|
| 5 | 2 |
4.5%
|
|
| 6 | 7 |
15.9%
|
|
| 7 | 7 |
15.9%
|
|
| 8 | 10 |
22.7%
|
|
| 9 | 4 |
9.1%
|
|
| 10 | Very effective | 2 |
4.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 120 |