| Value | Category | Cases | |
|---|---|---|---|
| -99 | 50 |
16%
|
|
| 1 | Not effective at all | 28 |
9%
|
| 2 | 11 |
3.5%
|
|
| 3 | 8 |
2.6%
|
|
| 4 | 20 |
6.4%
|
|
| 5 | 17 |
5.4%
|
|
| 6 | 15 |
4.8%
|
|
| 7 | 15 |
4.8%
|
|
| 8 | 10 |
3.2%
|
|
| 9 | 12 |
3.8%
|
|
| 10 | Very effective | 83 |
26.6%
|
| 11 | Don't know | 43 |
13.8%
|
| Sysmiss | 63 |