| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.3%
|
| 2 | 4 |
4.6%
|
|
| 3 | 2 |
2.3%
|
|
| 4 | 6 |
6.9%
|
|
| 5 | 4 |
4.6%
|
|
| 6 | 15 |
17.2%
|
|
| 7 | 13 |
14.9%
|
|
| 8 | 17 |
19.5%
|
|
| 9 | 13 |
14.9%
|
|
| 10 | Very effective | 11 |
12.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 79 |