| Value | Category | Cases | |
|---|---|---|---|
| -99 | 77 |
25.9%
|
|
| 1 | Not effective at all | 27 |
9.1%
|
| 2 | 8 |
2.7%
|
|
| 3 | 11 |
3.7%
|
|
| 4 | 18 |
6.1%
|
|
| 5 | 17 |
5.7%
|
|
| 6 | 16 |
5.4%
|
|
| 7 | 6 |
2%
|
|
| 8 | 12 |
4%
|
|
| 9 | 8 |
2.7%
|
|
| 10 | Very effective | 38 |
12.8%
|
| 11 | Don't know | 13 |
4.4%
|
| 12 | 46 |
15.5%
|
|
| Sysmiss | 78 |