| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.9%
|
| 2 | 7 |
6.7%
|
|
| 3 | 11 |
10.6%
|
|
| 4 | 3 |
2.9%
|
|
| 5 | 18 |
17.3%
|
|
| 6 | 16 |
15.4%
|
|
| 7 | 18 |
17.3%
|
|
| 8 | 7 |
6.7%
|
|
| 9 | 11 |
10.6%
|
|
| 10 | Very effective | 10 |
9.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 264 |