| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
4.4%
|
| 2 | 8 |
2.5%
|
|
| 3 | 11 |
3.5%
|
|
| 4 | 21 |
6.6%
|
|
| 5 | 46 |
14.6%
|
|
| 6 | 45 |
14.2%
|
|
| 7 | 36 |
11.4%
|
|
| 8 | 46 |
14.6%
|
|
| 9 | 31 |
9.8%
|
|
| 10 | Very effective | 58 |
18.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 189 |