| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
1.7%
|
| 2 | 14 |
2.3%
|
|
| 3 | 26 |
4.3%
|
|
| 4 | 36 |
5.9%
|
|
| 5 | 63 |
10.4%
|
|
| 6 | 50 |
8.3%
|
|
| 7 | 54 |
8.9%
|
|
| 8 | 53 |
8.7%
|
|
| 9 | 25 |
4.1%
|
|
| 10 | Very effective | 29 |
4.8%
|
| 11 | Don't know | 201 |
33.2%
|
| Sysmiss | 45 |
7.4%
|