| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.3%
|
|
| 1 | Not effective at all | 10 |
1.6%
|
| 2 | 7 |
1.1%
|
|
| 3 | 21 |
3.4%
|
|
| 4 | 28 |
4.6%
|
|
| 5 | 76 |
12.4%
|
|
| 6 | 72 |
11.7%
|
|
| 7 | 74 |
12.1%
|
|
| 8 | 66 |
10.8%
|
|
| 9 | 41 |
6.7%
|
|
| 10 | Very effective | 21 |
3.4%
|
| 11 | Don't know | 195 |
31.8%
|
| Sysmiss | 11 |