| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 |
2.4%
|
| 2 | 10 |
2.2%
|
|
| 3 | 16 |
3.5%
|
|
| 4 | 23 |
5%
|
|
| 5 | 43 |
9.3%
|
|
| 6 | 37 |
8%
|
|
| 7 | 37 |
8%
|
|
| 8 | 28 |
6.1%
|
|
| 9 | 29 |
6.3%
|
|
| 10 | Very effective | 64 |
13.9%
|
| 11 | Don't know | 28 |
6.1%
|
| 12 | 135 |
29.3%
|
|
| Sysmiss | 106 |