| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
3.1%
|
| 2 | 14 |
2.9%
|
|
| 3 | 32 |
6.7%
|
|
| 4 | 49 |
10.2%
|
|
| 5 | 75 |
15.7%
|
|
| 6 | 100 |
20.9%
|
|
| 7 | 57 |
11.9%
|
|
| 8 | 66 |
13.8%
|
|
| 9 | 45 |
9.4%
|
|
| 10 | Very effective | 26 |
5.4%
|
| 11 | Don't know | 181 | |
| Sysmiss | 59 |