| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.2%
|
| 2 | 7 |
5.1%
|
|
| 3 | 10 |
7.2%
|
|
| 4 | 11 |
8%
|
|
| 5 | 23 |
16.7%
|
|
| 6 | 14 |
10.1%
|
|
| 7 | 17 |
12.3%
|
|
| 8 | 23 |
16.7%
|
|
| 9 | 17 |
12.3%
|
|
| 10 | Very effective | 13 |
9.4%
|
| -99 | 17 | ||
| 11 | Don't know | 74 | |
| Sysmiss | 25 |