| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
3.5%
|
| 2 | 5 |
2.2%
|
|
| 3 | 13 |
5.8%
|
|
| 4 | 16 |
7.1%
|
|
| 5 | 34 |
15%
|
|
| 6 | 28 |
12.4%
|
|
| 7 | 31 |
13.7%
|
|
| 8 | 34 |
15%
|
|
| 9 | 21 |
9.3%
|
|
| 10 | Very effective | 36 |
15.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 279 |