| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.8%
|
| 2 | 4 |
7.5%
|
|
| 3 | 6 |
11.3%
|
|
| 4 | 6 |
11.3%
|
|
| 5 | 11 |
20.8%
|
|
| 6 | 3 |
5.7%
|
|
| 7 | 6 |
11.3%
|
|
| 8 | 7 |
13.2%
|
|
| 9 | 5 |
9.4%
|
|
| 10 | Very effective | 3 |
5.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 153 |