| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
5.4%
|
| 2 | 27 |
12.1%
|
|
| 3 | 34 |
15.2%
|
|
| 4 | 27 |
12.1%
|
|
| 5 | 28 |
12.5%
|
|
| 6 | 31 |
13.8%
|
|
| 7 | 26 |
11.6%
|
|
| 8 | 19 |
8.5%
|
|
| 9 | 14 |
6.3%
|
|
| 10 | Very effective | 6 |
2.7%
|
| 11 | Don't know | 66 | |
| Sysmiss | 13 |