| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.2%
|
| 2 | 5 |
5.4%
|
|
| 3 | 10 |
10.8%
|
|
| 4 | 8 |
8.6%
|
|
| 5 | 16 |
17.2%
|
|
| 6 | 13 |
14%
|
|
| 7 | 10 |
10.8%
|
|
| 8 | 13 |
14%
|
|
| 9 | 6 |
6.5%
|
|
| 10 | Very effective | 9 |
9.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 164 |