| Value | Category | Cases | |
|---|---|---|---|
| -99 | 6 |
3.7%
|
|
| 1 | Not effective at all | 5 |
3.1%
|
| 2 | 3 |
1.9%
|
|
| 3 | 5 |
3.1%
|
|
| 4 | 5 |
3.1%
|
|
| 5 | 8 |
4.9%
|
|
| 6 | 13 |
8%
|
|
| 7 | 15 |
9.3%
|
|
| 8 | 28 |
17.3%
|
|
| 9 | 10 |
6.2%
|
|
| 10 | Very effective | 5 |
3.1%
|
| 11 | Don't know | 59 |
36.4%
|
| Sysmiss | 5 |