| Value | Category | Cases | |
|---|---|---|---|
| -99 | 10 |
2.6%
|
|
| 1 | Not effective at all | 7 |
1.8%
|
| 2 | 1 |
0.3%
|
|
| 3 | 7 |
1.8%
|
|
| 4 | 9 |
2.4%
|
|
| 5 | 40 |
10.5%
|
|
| 6 | 36 |
9.4%
|
|
| 7 | 49 |
12.9%
|
|
| 8 | 37 |
9.7%
|
|
| 9 | 20 |
5.2%
|
|
| 10 | Very effective | 10 |
2.6%
|
| 11 | Don't know | 155 |
40.7%
|
| Sysmiss | 3 |