| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 18 |
5.4%
|
| 2 | 23 |
6.9%
|
|
| 3 | 29 |
8.7%
|
|
| 4 | 27 |
8.1%
|
|
| 5 | 47 |
14.2%
|
|
| 6 | 52 |
15.7%
|
|
| 7 | 46 |
13.9%
|
|
| 8 | 46 |
13.9%
|
|
| 9 | 22 |
6.6%
|
|
| 10 | Very effective | 22 |
6.6%
|
| -99 | 68 | ||
| 11 | Don't know | 106 | |
| Sysmiss | 151 |