| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.4%
|
| 2 | 13 |
2.5%
|
|
| 3 | 53 |
10.2%
|
|
| 4 | 75 |
14.5%
|
|
| 5 | 98 |
18.9%
|
|
| 6 | 92 |
17.7%
|
|
| 7 | 89 |
17.1%
|
|
| 8 | 59 |
11.4%
|
|
| 9 | 27 |
5.2%
|
|
| 10 | Very effective | 11 |
2.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 44 |