| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.4%
|
|
| 3 | 5 |
1.9%
|
|
| 4 | 8 |
3%
|
|
| 5 | 15 |
5.7%
|
|
| 6 | 28 |
10.6%
|
|
| 7 | 62 |
23.4%
|
|
| 8 | 73 |
27.5%
|
|
| 9 | 47 |
17.7%
|
|
| 10 | Very effective | 26 |
9.8%
|
| -99 | 27 | ||
| 11 | Don't know | 250 | |
| Sysmiss | 38 |