| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.1%
|
| 2 | 2 |
2.1%
|
|
| 3 | 2 |
2.1%
|
|
| 4 | 6 |
6.4%
|
|
| 5 | 16 |
17%
|
|
| 6 | 18 |
19.1%
|
|
| 7 | 19 |
20.2%
|
|
| 8 | 12 |
12.8%
|
|
| 9 | 12 |
12.8%
|
|
| 10 | Very effective | 5 |
5.3%
|
| -99 | 3 | ||
| 11 | Don't know | 38 | |
| Sysmiss | 24 |