| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 3 |
0.9%
|
|
| 4 | 6 |
1.8%
|
|
| 5 | 20 |
6%
|
|
| 6 | 31 |
9.3%
|
|
| 7 | 74 |
22.2%
|
|
| 8 | 115 |
34.4%
|
|
| 9 | 43 |
12.9%
|
|
| 10 | Very effective | 42 |
12.6%
|
| -99 | 18 | ||
| 11 | Don't know | 189 | |
| Sysmiss | 39 |