| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
3.5%
|
| 2 | 9 |
3.9%
|
|
| 3 | 12 |
5.2%
|
|
| 4 | 19 |
8.3%
|
|
| 5 | 20 |
8.7%
|
|
| 6 | 43 |
18.8%
|
|
| 7 | 44 |
19.2%
|
|
| 8 | 49 |
21.4%
|
|
| 9 | 13 |
5.7%
|
|
| 10 | Very effective | 12 |
5.2%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 211 |