| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
3.4%
|
| 2 | 15 |
3.4%
|
|
| 3 | 21 |
4.8%
|
|
| 4 | 28 |
6.4%
|
|
| 5 | 46 |
10.6%
|
|
| 6 | 27 |
6.2%
|
|
| 7 | 32 |
7.3%
|
|
| 8 | 30 |
6.9%
|
|
| 9 | 26 |
6%
|
|
| 10 | Very effective | 47 |
10.8%
|
| 11 | Don't know | 149 |
34.2%
|
| Sysmiss | 131 |