| Value | Category | Cases | |
|---|---|---|---|
| -99 | 10 |
3.4%
|
|
| 1 | Not effective at all | 23 |
7.7%
|
| 2 | 19 |
6.4%
|
|
| 3 | 19 |
6.4%
|
|
| 4 | 27 |
9.1%
|
|
| 5 | 38 |
12.8%
|
|
| 6 | 31 |
10.4%
|
|
| 7 | 28 |
9.4%
|
|
| 8 | 27 |
9.1%
|
|
| 9 | 13 |
4.4%
|
|
| 10 | Very effective | 12 |
4%
|
| 11 | Don't know | 50 |
16.8%
|
| Sysmiss | 10 |