| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
5.7%
|
| 2 | 5 |
3.2%
|
|
| 3 | 12 |
7.6%
|
|
| 4 | 4 |
2.5%
|
|
| 5 | 14 |
8.9%
|
|
| 6 | 10 |
6.3%
|
|
| 7 | 14 |
8.9%
|
|
| 8 | 10 |
6.3%
|
|
| 9 | 13 |
8.2%
|
|
| 10 | Very effective | 9 |
5.7%
|
| 11 | Don't know | 6 |
3.8%
|
| 12 | Not applicable | 52 |
32.9%
|
| Sysmiss | 49 |