| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.6%
|
| 2 | 2 |
1.6%
|
|
| 3 | 8 |
6.3%
|
|
| 4 | 3 |
2.4%
|
|
| 5 | 14 |
11.1%
|
|
| 6 | 23 |
18.3%
|
|
| 7 | 30 |
23.8%
|
|
| 8 | 28 |
22.2%
|
|
| 9 | 12 |
9.5%
|
|
| 10 | Very effective | 4 |
3.2%
|
| -99 | 2 | ||
| 11 | Don't know | 17 | |
| Sysmiss | 14 |