| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.4%
|
| 2 | 5 |
2.4%
|
|
| 3 | 8 |
3.8%
|
|
| 4 | 10 |
4.8%
|
|
| 5 | 24 |
11.5%
|
|
| 6 | 19 |
9.1%
|
|
| 7 | 28 |
13.5%
|
|
| 8 | 34 |
16.3%
|
|
| 9 | 31 |
14.9%
|
|
| 10 | Very effective | 44 |
21.2%
|
| -99 | 11 | ||
| 11 | Don't know | 82 | |
| Sysmiss | 51 |