| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 2 |
0.9%
|
|
| 4 | 5 |
2.2%
|
|
| 5 | 23 |
10.1%
|
|
| 6 | 28 |
12.3%
|
|
| 7 | 52 |
22.9%
|
|
| 8 | 72 |
31.7%
|
|
| 9 | 27 |
11.9%
|
|
| 10 | Very effective | 18 |
7.9%
|
| -99 | 29 | ||
| 11 | Don't know | 285 | |
| Sysmiss | 39 |