| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.3%
|
|
| 1 | Not effective at all | 17 |
5.8%
|
| 2 | 19 |
6.4%
|
|
| 3 | 18 |
6.1%
|
|
| 4 | 23 |
7.8%
|
|
| 5 | 32 |
10.8%
|
|
| 6 | 30 |
10.2%
|
|
| 7 | 35 |
11.9%
|
|
| 8 | 28 |
9.5%
|
|
| 9 | 13 |
4.4%
|
|
| 10 | Very effective | 11 |
3.7%
|
| 11 | Don't know | 68 |
23.1%
|
| Sysmiss | 12 |