| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
2.6%
|
| 2 | 7 |
2.6%
|
|
| 3 | 7 |
2.6%
|
|
| 4 | 8 |
3%
|
|
| 5 | 25 |
9.4%
|
|
| 6 | 16 |
6%
|
|
| 7 | 20 |
7.5%
|
|
| 8 | 18 |
6.7%
|
|
| 9 | 14 |
5.2%
|
|
| 10 | Very effective | 12 |
4.5%
|
| 11 | Don't know | 133 |
49.8%
|
| Sysmiss | 26 |