| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 16 |
3.6%
|
| 2 | 16 |
3.6%
|
|
| 3 | 30 |
6.7%
|
|
| 4 | 70 |
15.7%
|
|
| 5 | 94 |
21.1%
|
|
| 6 | 100 |
22.4%
|
|
| 7 | 52 |
11.7%
|
|
| 8 | 27 |
6.1%
|
|
| 9 | 19 |
4.3%
|
|
| 10 | Very effective | 22 |
4.9%
|
| 11 | Don't know | 202 | |
| Sysmiss | 71 |