| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
1%
|
|
| 1 | Not effective at all | 18 |
6.2%
|
| 2 | 20 |
6.8%
|
|
| 3 | 16 |
5.5%
|
|
| 4 | 15 |
5.1%
|
|
| 5 | 29 |
9.9%
|
|
| 6 | 16 |
5.5%
|
|
| 7 | 14 |
4.8%
|
|
| 8 | 8 |
2.7%
|
|
| 9 | 4 |
1.4%
|
|
| 10 | Very effective | 3 |
1%
|
| 11 | Don't know | 146 |
50%
|
| Sysmiss | 9 |