| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 30 |
9.4%
|
| 2 | 32 |
10.1%
|
|
| 3 | 54 |
17%
|
|
| 4 | 59 |
18.6%
|
|
| 5 | 71 |
22.3%
|
|
| 6 | 33 |
10.4%
|
|
| 7 | 21 |
6.6%
|
|
| 8 | 7 |
2.2%
|
|
| 9 | 3 |
0.9%
|
|
| 10 | Very effective | 8 |
2.5%
|
| 11 | Don't know | 157 | |
| Sysmiss | 3 |