| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
1.1%
|
| 2 | 15 |
2.9%
|
|
| 3 | 40 |
7.6%
|
|
| 4 | 74 |
14.1%
|
|
| 5 | 92 |
17.6%
|
|
| 6 | 132 |
25.2%
|
|
| 7 | 81 |
15.5%
|
|
| 8 | 51 |
9.8%
|
|
| 9 | 24 |
4.6%
|
|
| 10 | Very effective | 8 |
1.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 40 |