| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
2.9%
|
|
| 3 | 11 |
10.6%
|
|
| 4 | 14 |
13.5%
|
|
| 5 | 14 |
13.5%
|
|
| 6 | 20 |
19.2%
|
|
| 7 | 18 |
17.3%
|
|
| 8 | 18 |
17.3%
|
|
| 9 | 2 |
1.9%
|
|
| 10 | Very effective | 4 |
3.8%
|
| -99 | 6 | ||
| 11 | Don't know | 125 | |
| Sysmiss | 25 |