| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
1.6%
|
| 2 | 10 |
2%
|
|
| 3 | 19 |
3.8%
|
|
| 4 | 33 |
6.6%
|
|
| 5 | 77 |
15.3%
|
|
| 6 | 102 |
20.3%
|
|
| 7 | 77 |
15.3%
|
|
| 8 | 87 |
17.3%
|
|
| 9 | 46 |
9.2%
|
|
| 10 | Very effective | 43 |
8.6%
|
| 11 | Don't know | 147 | |
| Sysmiss | 70 |