| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
6%
|
| 2 | 2 |
2%
|
|
| 3 | 4 |
4%
|
|
| 4 | 5 |
5%
|
|
| 5 | 5 |
5%
|
|
| 6 | 8 |
8%
|
|
| 7 | 13 |
13%
|
|
| 8 | 19 |
19%
|
|
| 9 | 7 |
7%
|
|
| 10 | Very effective | 31 |
31%
|
| 11 | N/A | 4 | |
| 12 | Don't know | 55 | |
| Sysmiss | 21 |