| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.1%
|
| 2 | 4 |
2.9%
|
|
| 3 | 6 |
4.4%
|
|
| 4 | 8 |
5.9%
|
|
| 5 | 19 |
14%
|
|
| 6 | 19 |
14%
|
|
| 7 | 24 |
17.6%
|
|
| 8 | 20 |
14.7%
|
|
| 9 | 18 |
13.2%
|
|
| 10 | Very effective | 11 |
8.1%
|
| -99 | 14 | ||
| 11 | Don't know | 79 | |
| Sysmiss | 25 |