| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.3%
|
|
| 1 | Not effective at all | 6 |
2%
|
| 2 | 9 |
3.1%
|
|
| 3 | 14 |
4.8%
|
|
| 4 | 16 |
5.5%
|
|
| 5 | 38 |
13%
|
|
| 6 | 28 |
9.6%
|
|
| 7 | 15 |
5.1%
|
|
| 8 | 18 |
6.1%
|
|
| 9 | 10 |
3.4%
|
|
| 10 | Very effective | 7 |
2.4%
|
| 11 | Don't know | 131 |
44.7%
|
| Sysmiss | 8 |