| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 6 |
2%
|
|
| 3 | 10 |
3.3%
|
|
| 4 | 9 |
3%
|
|
| 5 | 44 |
14.6%
|
|
| 6 | 51 |
16.9%
|
|
| 7 | 64 |
21.2%
|
|
| 8 | 66 |
21.9%
|
|
| 9 | 40 |
13.2%
|
|
| 10 | Very effective | 10 |
3.3%
|
| -99 | 1 | ||
| 11 | Don't know | 22 | |
| Sysmiss | 35 |