| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.6%
|
| 2 | 4 |
3.2%
|
|
| 3 | 11 |
8.8%
|
|
| 4 | 8 |
6.4%
|
|
| 5 | 18 |
14.4%
|
|
| 6 | 10 |
8%
|
|
| 7 | 17 |
13.6%
|
|
| 8 | 28 |
22.4%
|
|
| 9 | 10 |
8%
|
|
| 10 | Very effective | 12 |
9.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 154 |