| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
0.5%
|
|
| 3 | 2 |
0.5%
|
|
| 4 | 2 |
0.5%
|
|
| 5 | 18 |
4.9%
|
|
| 6 | 45 |
12.1%
|
|
| 7 | 84 |
22.6%
|
|
| 8 | 100 |
27%
|
|
| 9 | 75 |
20.2%
|
|
| 10 | Very effective | 43 |
11.6%
|
| -99 | 27 | ||
| 11 | Don't know | 143 | |
| Sysmiss | 39 |