| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.8%
|
| 2 | 7 |
3.3%
|
|
| 3 | 7 |
3.3%
|
|
| 4 | 3 |
1.4%
|
|
| 5 | 12 |
5.6%
|
|
| 6 | 16 |
7.5%
|
|
| 7 | 23 |
10.7%
|
|
| 8 | 23 |
10.7%
|
|
| 9 | 12 |
5.6%
|
|
| 10 | Very effective | 7 |
3.3%
|
| 11 | Don't know | 98 |
45.8%
|
| Sysmiss | 11 |