| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
0.8%
|
| 2 | 14 |
2.7%
|
|
| 3 | 35 |
6.7%
|
|
| 4 | 79 |
15.2%
|
|
| 5 | 109 |
21%
|
|
| 6 | 86 |
16.6%
|
|
| 7 | 90 |
17.3%
|
|
| 8 | 65 |
12.5%
|
|
| 9 | 24 |
4.6%
|
|
| 10 | Very effective | 13 |
2.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 44 |