| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.4%
|
| 2 | 8 |
3.2%
|
|
| 3 | 9 |
3.6%
|
|
| 4 | 7 |
2.8%
|
|
| 5 | 20 |
8%
|
|
| 6 | 52 |
20.9%
|
|
| 7 | 50 |
20.1%
|
|
| 8 | 54 |
21.7%
|
|
| 9 | 17 |
6.8%
|
|
| 10 | Very effective | 26 |
10.4%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 191 |