| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.7%
|
| 2 | 8 |
6.6%
|
|
| 3 | 15 |
12.3%
|
|
| 4 | 16 |
13.1%
|
|
| 5 | 19 |
15.6%
|
|
| 6 | 18 |
14.8%
|
|
| 7 | 13 |
10.7%
|
|
| 8 | 12 |
9.8%
|
|
| 9 | 9 |
7.4%
|
|
| 10 | Very effective | 5 |
4.1%
|
| -99 | 19 | ||
| 11 | Don't know | 87 | |
| Sysmiss | 26 |