| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 5 |
1.6%
|
|
| 4 | 4 |
1.3%
|
|
| 5 | 15 |
4.8%
|
|
| 6 | 35 |
11.2%
|
|
| 7 | 71 |
22.7%
|
|
| 8 | 100 |
31.9%
|
|
| 9 | 47 |
15%
|
|
| 10 | Very effective | 35 |
11.2%
|
| -99 | 21 | ||
| 11 | Don't know | 208 | |
| Sysmiss | 38 |