| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.3%
|
| 2 | 4 |
3.3%
|
|
| 3 | 14 |
11.6%
|
|
| 4 | 6 |
5%
|
|
| 5 | 24 |
19.8%
|
|
| 6 | 12 |
9.9%
|
|
| 7 | 20 |
16.5%
|
|
| 8 | 10 |
8.3%
|
|
| 9 | 13 |
10.7%
|
|
| 10 | Very effective | 14 |
11.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 247 |