| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.6%
|
| 2 | 6 |
2.4%
|
|
| 3 | 7 |
2.8%
|
|
| 4 | 15 |
6%
|
|
| 5 | 25 |
10%
|
|
| 6 | 35 |
13.9%
|
|
| 7 | 67 |
26.7%
|
|
| 8 | 44 |
17.5%
|
|
| 9 | 31 |
12.4%
|
|
| 10 | Very effective | 17 |
6.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 189 |