| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.1%
|
| 2 | 2 |
2.1%
|
|
| 3 | 6 |
6.2%
|
|
| 4 | 8 |
8.2%
|
|
| 5 | 8 |
8.2%
|
|
| 6 | 14 |
14.4%
|
|
| 7 | 7 |
7.2%
|
|
| 8 | 30 |
30.9%
|
|
| 9 | 12 |
12.4%
|
|
| 10 | Very effective | 8 |
8.2%
|
| -99 | 12 | ||
| 11 | Don't know | 58 | |
| Sysmiss | 16 |