| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.2%
|
| 2 | 2 |
3.2%
|
|
| 3 | 1 |
1.6%
|
|
| 4 | 3 |
4.8%
|
|
| 5 | 12 |
19%
|
|
| 6 | 7 |
11.1%
|
|
| 7 | 7 |
11.1%
|
|
| 8 | 15 |
23.8%
|
|
| 9 | 8 |
12.7%
|
|
| 10 | Very effective | 6 |
9.5%
|
| -99 | 14 | ||
| 11 | Don't know | 90 | |
| Sysmiss | 16 |