| Value | Category | Cases | |
|---|---|---|---|
| -99 | 11 |
3.7%
|
|
| 1 | Not effective at all | 18 |
6.1%
|
| 2 | 18 |
6.1%
|
|
| 3 | 25 |
8.5%
|
|
| 4 | 23 |
7.8%
|
|
| 5 | 16 |
5.4%
|
|
| 6 | 19 |
6.4%
|
|
| 7 | 25 |
8.5%
|
|
| 8 | 21 |
7.1%
|
|
| 9 | 12 |
4.1%
|
|
| 10 | Very effective | 20 |
6.8%
|
| 11 | Don't know | 87 |
29.5%
|
| Sysmiss | 31 |