| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.3%
|
| 2 | 7 |
3.9%
|
|
| 3 | 17 |
9.4%
|
|
| 4 | 12 |
6.7%
|
|
| 5 | 23 |
12.8%
|
|
| 6 | 17 |
9.4%
|
|
| 7 | 35 |
19.4%
|
|
| 8 | 32 |
17.8%
|
|
| 9 | 19 |
10.6%
|
|
| 10 | Very effective | 12 |
6.7%
|
| 11 | Don't know | 76 | |
| Sysmiss | 6 |