| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.6%
|
| 2 | 4 |
1.3%
|
|
| 3 | 5 |
1.6%
|
|
| 4 | 28 |
9.1%
|
|
| 5 | 34 |
11%
|
|
| 6 | 32 |
10.4%
|
|
| 7 | 26 |
8.4%
|
|
| 8 | 19 |
6.2%
|
|
| 9 | 14 |
4.5%
|
|
| 10 | Very effective | 7 |
2.3%
|
| 11 | Don't know | 134 |
43.5%
|
| Sysmiss | 60 |