| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 |
7.8%
|
| 2 | 8 |
5.7%
|
|
| 3 | 12 |
8.5%
|
|
| 4 | 13 |
9.2%
|
|
| 5 | 23 |
16.3%
|
|
| 6 | 23 |
16.3%
|
|
| 7 | 18 |
12.8%
|
|
| 8 | 23 |
16.3%
|
|
| 9 | 8 |
5.7%
|
|
| 10 | Very effective | 2 |
1.4%
|
| 11 | Don't know | 96 | |
| Sysmiss | 52 |