| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
6.1%
|
| 2 | 4 |
4%
|
|
| 3 | 7 |
7.1%
|
|
| 4 | 8 |
8.1%
|
|
| 5 | 16 |
16.2%
|
|
| 6 | 6 |
6.1%
|
|
| 7 | 21 |
21.2%
|
|
| 8 | 3 |
3%
|
|
| 9 | 12 |
12.1%
|
|
| 10 | Very effective | 16 |
16.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 269 |