| Value | Category | Cases | |
|---|---|---|---|
| -99 | 9 |
3.9%
|
|
| 1 | Not effective at all | 6 |
2.6%
|
| 2 | 8 |
3.4%
|
|
| 3 | 10 |
4.3%
|
|
| 4 | 15 |
6.5%
|
|
| 5 | 27 |
11.6%
|
|
| 6 | 28 |
12.1%
|
|
| 7 | 27 |
11.6%
|
|
| 8 | 22 |
9.5%
|
|
| 9 | 14 |
6%
|
|
| 10 | Very effective | 7 |
3%
|
| 11 | Don't know | 59 |
25.4%
|
| Sysmiss | 12 |