| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
3.9%
|
| 2 | 8 |
2.4%
|
|
| 3 | 6 |
1.8%
|
|
| 4 | 21 |
6.3%
|
|
| 5 | 45 |
13.5%
|
|
| 6 | 43 |
12.9%
|
|
| 7 | 45 |
13.5%
|
|
| 8 | 21 |
6.3%
|
|
| 9 | 22 |
6.6%
|
|
| 10 | Very effective | 21 |
6.3%
|
| 11 | N/A | 7 |
2.1%
|
| 12 | Don't know | 82 |
24.6%
|
| Sysmiss | 20 |