| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.4%
|
| 2 | 10 |
6.8%
|
|
| 3 | 5 |
3.4%
|
|
| 4 | 10 |
6.8%
|
|
| 5 | 14 |
9.5%
|
|
| 6 | 26 |
17.7%
|
|
| 7 | 23 |
15.6%
|
|
| 8 | 19 |
12.9%
|
|
| 9 | 23 |
15.6%
|
|
| 10 | Very effective | 12 |
8.2%
|
| -99 | 15 | ||
| 11 | Don't know | 67 | |
| Sysmiss | 25 |