| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
2.8%
|
| 2 | 7 |
2.8%
|
|
| 3 | 12 |
4.7%
|
|
| 4 | 7 |
2.8%
|
|
| 5 | 22 |
8.7%
|
|
| 6 | 19 |
7.5%
|
|
| 7 | 46 |
18.2%
|
|
| 8 | 56 |
22.1%
|
|
| 9 | 51 |
20.2%
|
|
| 10 | Very effective | 26 |
10.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 138 |