| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
1.4%
|
| 2 | 11 |
2.2%
|
|
| 3 | 43 |
8.4%
|
|
| 4 | 67 |
13.2%
|
|
| 5 | 86 |
16.9%
|
|
| 6 | 109 |
21.4%
|
|
| 7 | 87 |
17.1%
|
|
| 8 | 58 |
11.4%
|
|
| 9 | 30 |
5.9%
|
|
| 10 | Very effective | 11 |
2.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 54 |