| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
10.3%
|
| 2 | 9 |
6.2%
|
|
| 3 | 9 |
6.2%
|
|
| 4 | 8 |
5.5%
|
|
| 5 | 8 |
5.5%
|
|
| 6 | 12 |
8.2%
|
|
| 7 | 16 |
11%
|
|
| 8 | 24 |
16.4%
|
|
| 9 | 10 |
6.8%
|
|
| 10 | Very effective | 35 |
24%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 196 |