| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.9%
|
| 2 | 3 |
2.8%
|
|
| 3 | 1 |
0.9%
|
|
| 4 | 2 |
1.9%
|
|
| 5 | 9 |
8.3%
|
|
| 6 | 12 |
11.1%
|
|
| 7 | 14 |
13%
|
|
| 8 | 24 |
22.2%
|
|
| 9 | 26 |
24.1%
|
|
| 10 | Very effective | 15 |
13.9%
|
| -99 | 15 | ||
| 11 | Don't know | 58 | |
| Sysmiss | 23 |