| Value | Category | Cases | |
|---|---|---|---|
| -99 | 10 |
3.4%
|
|
| 1 | Not effective at all | 14 |
4.7%
|
| 2 | 13 |
4.4%
|
|
| 3 | 18 |
6.1%
|
|
| 4 | 21 |
7.1%
|
|
| 5 | 25 |
8.4%
|
|
| 6 | 26 |
8.8%
|
|
| 7 | 20 |
6.7%
|
|
| 8 | 13 |
4.4%
|
|
| 9 | 10 |
3.4%
|
|
| 10 | Very effective | 15 |
5.1%
|
| 11 | Don't know | 112 |
37.7%
|
| Sysmiss | 29 |