| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
4.1%
|
| 2 | 5 |
3.4%
|
|
| 3 | 12 |
8.2%
|
|
| 4 | 9 |
6.2%
|
|
| 5 | 21 |
14.4%
|
|
| 6 | 17 |
11.6%
|
|
| 7 | 20 |
13.7%
|
|
| 8 | 22 |
15.1%
|
|
| 9 | 24 |
16.4%
|
|
| 10 | Very effective | 10 |
6.8%
|
| -99 | 16 | ||
| 11 | Don't know | 67 | |
| Sysmiss | 25 |