| Value | Category | Cases | |
|---|---|---|---|
| -99 | 6 |
2%
|
|
| 1 | Not effective at all | 18 |
6%
|
| 2 | 12 |
4%
|
|
| 3 | 11 |
3.7%
|
|
| 4 | 18 |
6%
|
|
| 5 | 43 |
14.4%
|
|
| 6 | 30 |
10%
|
|
| 7 | 28 |
9.4%
|
|
| 8 | 31 |
10.4%
|
|
| 9 | 14 |
4.7%
|
|
| 10 | Very effective | 15 |
5%
|
| 11 | Don't know | 73 |
24.4%
|
| Sysmiss | 8 |