| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.2%
|
| 2 | 2 |
1.1%
|
|
| 3 | 9 |
4.9%
|
|
| 4 | 15 |
8.2%
|
|
| 5 | 26 |
14.2%
|
|
| 6 | 31 |
16.9%
|
|
| 7 | 31 |
16.9%
|
|
| 8 | 27 |
14.8%
|
|
| 9 | 24 |
13.1%
|
|
| 10 | Very effective | 14 |
7.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 172 |