| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 42 |
20.6%
|
| 2 | 10 |
4.9%
|
|
| 3 | 15 |
7.4%
|
|
| 4 | 7 |
3.4%
|
|
| 5 | 18 |
8.8%
|
|
| 6 | 15 |
7.4%
|
|
| 7 | 21 |
10.3%
|
|
| 8 | 19 |
9.3%
|
|
| 9 | 15 |
7.4%
|
|
| 10 | Very effective | 42 |
20.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 138 |