| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.3%
|
| 2 | 4 |
3.3%
|
|
| 3 | 6 |
4.9%
|
|
| 4 | 11 |
9%
|
|
| 5 | 20 |
16.4%
|
|
| 6 | 14 |
11.5%
|
|
| 7 | 13 |
10.7%
|
|
| 8 | 18 |
14.8%
|
|
| 9 | 18 |
14.8%
|
|
| 10 | Very effective | 14 |
11.5%
|
| -99 | 16 | ||
| 11 | Don't know | 90 | |
| Sysmiss | 26 |