| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
4.1%
|
| 2 | 4 |
2.8%
|
|
| 3 | 8 |
5.5%
|
|
| 4 | 10 |
6.9%
|
|
| 5 | 18 |
12.4%
|
|
| 6 | 16 |
11%
|
|
| 7 | 25 |
17.2%
|
|
| 8 | 26 |
17.9%
|
|
| 9 | 17 |
11.7%
|
|
| 10 | Very effective | 15 |
10.3%
|
| 11 | Don't know | 59 | |
| Sysmiss | 34 |