| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
1.2%
|
| 2 | 17 |
3.3%
|
|
| 3 | 49 |
9.5%
|
|
| 4 | 72 |
13.9%
|
|
| 5 | 101 |
19.5%
|
|
| 6 | 108 |
20.8%
|
|
| 7 | 66 |
12.7%
|
|
| 8 | 51 |
9.8%
|
|
| 9 | 35 |
6.8%
|
|
| 10 | Very effective | 13 |
2.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 45 |