| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.4%
|
|
| 1 | Not effective at all | 30 |
11.3%
|
| 2 | 22 |
8.3%
|
|
| 3 | 21 |
7.9%
|
|
| 4 | 32 |
12%
|
|
| 5 | 16 |
6%
|
|
| 6 | 12 |
4.5%
|
|
| 7 | 17 |
6.4%
|
|
| 8 | 8 |
3%
|
|
| 9 | 9 |
3.4%
|
|
| 10 | Very effective | 29 |
10.9%
|
| 11 | Don't know | 69 |
25.9%
|
| Sysmiss | 39 |