| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.8%
|
| 2 | 6 |
5.3%
|
|
| 3 | 10 |
8.8%
|
|
| 4 | 12 |
10.6%
|
|
| 5 | 12 |
10.6%
|
|
| 6 | 6 |
5.3%
|
|
| 7 | 18 |
15.9%
|
|
| 8 | 25 |
22.1%
|
|
| 9 | 18 |
15.9%
|
|
| 10 | Very effective | 4 |
3.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 262 |