| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.3%
|
|
| 1 | Not effective at all | 3 |
1%
|
| 2 | 6 |
2.1%
|
|
| 3 | 8 |
2.7%
|
|
| 4 | 13 |
4.5%
|
|
| 5 | 39 |
13.4%
|
|
| 6 | 33 |
11.3%
|
|
| 7 | 36 |
12.3%
|
|
| 8 | 30 |
10.3%
|
|
| 9 | 12 |
4.1%
|
|
| 10 | Very effective | 7 |
2.4%
|
| 11 | Don't know | 104 |
35.6%
|
| Sysmiss | 9 |