| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
7.3%
|
| 2 | 2 |
1.8%
|
|
| 3 | 9 |
8.3%
|
|
| 4 | 11 |
10.1%
|
|
| 5 | 13 |
11.9%
|
|
| 6 | 10 |
9.2%
|
|
| 7 | 14 |
12.8%
|
|
| 8 | 22 |
20.2%
|
|
| 9 | 9 |
8.3%
|
|
| 10 | Very effective | 11 |
10.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 170 |