| Value | Category | Cases | |
|---|---|---|---|
| -99 | 8 |
3.6%
|
|
| 1 | Not effective at all | 6 |
2.7%
|
| 2 | 3 |
1.3%
|
|
| 3 | 9 |
4%
|
|
| 4 | 10 |
4.4%
|
|
| 5 | 24 |
10.7%
|
|
| 6 | 11 |
4.9%
|
|
| 7 | 13 |
5.8%
|
|
| 8 | 10 |
4.4%
|
|
| 9 | 8 |
3.6%
|
|
| 10 | Very effective | 3 |
1.3%
|
| 11 | Don't know | 120 |
53.3%
|
| Sysmiss | 12 |