| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 |
11.3%
|
| 2 | 4 |
4.1%
|
|
| 3 | 5 |
5.2%
|
|
| 4 | 3 |
3.1%
|
|
| 5 | 9 |
9.3%
|
|
| 6 | 8 |
8.2%
|
|
| 7 | 14 |
14.4%
|
|
| 8 | 4 |
4.1%
|
|
| 9 | 7 |
7.2%
|
|
| 10 | Very effective | 32 |
33%
|
| 11 | N/A | 9 | |
| 12 | Don't know | 49 | |
| Sysmiss | 25 |