| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
2%
|
|
| 1 | Not effective at all | 1 |
1%
|
| 2 | 3 |
3%
|
|
| 3 | 3 |
3%
|
|
| 4 | 3 |
3%
|
|
| 5 | 12 |
12%
|
|
| 6 | 9 |
9%
|
|
| 7 | 9 |
9%
|
|
| 8 | 5 |
5%
|
|
| 9 | 6 |
6%
|
|
| 10 | Very effective | 0 |
0%
|
| 11 | Don't know | 47 |
47%
|
| Sysmiss | 7 |