| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 21 |
4.4%
|
| 2 | 16 |
3.3%
|
|
| 3 | 44 |
9.1%
|
|
| 4 | 48 |
10%
|
|
| 5 | 96 |
19.9%
|
|
| 6 | 118 |
24.5%
|
|
| 7 | 63 |
13.1%
|
|
| 8 | 32 |
6.6%
|
|
| 9 | 25 |
5.2%
|
|
| 10 | Very effective | 19 |
3.9%
|
| 11 | Don't know | 176 | |
| Sysmiss | 61 |