| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
4.1%
|
| 2 | 5 |
3.4%
|
|
| 3 | 10 |
6.8%
|
|
| 4 | 6 |
4.1%
|
|
| 5 | 11 |
7.4%
|
|
| 6 | 15 |
10.1%
|
|
| 7 | 27 |
18.2%
|
|
| 8 | 32 |
21.6%
|
|
| 9 | 21 |
14.2%
|
|
| 10 | Very effective | 15 |
10.1%
|
| -99 | 13 | ||
| 11 | Don't know | 68 | |
| Sysmiss | 25 |