| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2%
|
| 2 | 6 |
2%
|
|
| 3 | 5 |
1.7%
|
|
| 4 | 11 |
3.7%
|
|
| 5 | 69 |
23.4%
|
|
| 6 | 57 |
19.3%
|
|
| 7 | 43 |
14.6%
|
|
| 8 | 28 |
9.5%
|
|
| 9 | 19 |
6.4%
|
|
| 10 | Very effective | 15 |
5.1%
|
| 11 | Don't know | 36 |
12.2%
|
| Sysmiss | 6 |