| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.2%
|
| 2 | 3 |
0.9%
|
|
| 3 | 4 |
1.2%
|
|
| 4 | 11 |
3.2%
|
|
| 5 | 33 |
9.6%
|
|
| 6 | 42 |
12.2%
|
|
| 7 | 46 |
13.4%
|
|
| 8 | 44 |
12.8%
|
|
| 9 | 33 |
9.6%
|
|
| 10 | Very effective | 44 |
12.8%
|
| 11 | N/A | 9 |
2.6%
|
| 12 | Don't know | 70 |
20.4%
|
| Sysmiss | 11 |