| Value | Category | Cases | |
|---|---|---|---|
| -99 | 8 |
9.2%
|
|
| 1 | Not effective at all | 4 |
4.6%
|
| 2 | 9 |
10.3%
|
|
| 3 | 9 |
10.3%
|
|
| 4 | 8 |
9.2%
|
|
| 5 | 4 |
4.6%
|
|
| 6 | 5 |
5.7%
|
|
| 7 | 5 |
5.7%
|
|
| 8 | 6 |
6.9%
|
|
| 9 | 8 |
9.2%
|
|
| 10 | Very effective | 5 |
5.7%
|
| 11 | Don't know | 16 |
18.4%
|
| Sysmiss | 7 |