| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
1.7%
|
|
| 1 | Not effective at all | 21 |
7.1%
|
| 2 | 12 |
4.1%
|
|
| 3 | 24 |
8.1%
|
|
| 4 | 28 |
9.5%
|
|
| 5 | 42 |
14.2%
|
|
| 6 | 31 |
10.5%
|
|
| 7 | 23 |
7.8%
|
|
| 8 | 18 |
6.1%
|
|
| 9 | 10 |
3.4%
|
|
| 10 | Very effective | 9 |
3%
|
| 11 | Don't know | 73 |
24.7%
|
| Sysmiss | 11 |