| Value | Category | Cases | |
|---|---|---|---|
| -99 | 8 |
3.5%
|
|
| 1 | Not effective at all | 6 |
2.6%
|
| 2 | 1 |
0.4%
|
|
| 3 | 5 |
2.2%
|
|
| 4 | 16 |
6.9%
|
|
| 5 | 23 |
10%
|
|
| 6 | 21 |
9.1%
|
|
| 7 | 22 |
9.5%
|
|
| 8 | 15 |
6.5%
|
|
| 9 | 11 |
4.8%
|
|
| 10 | Very effective | 9 |
3.9%
|
| 11 | Don't know | 94 |
40.7%
|
| Sysmiss | 6 |