| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.2%
|
| 2 | 5 |
3%
|
|
| 3 | 13 |
7.9%
|
|
| 4 | 7 |
4.2%
|
|
| 5 | 20 |
12.1%
|
|
| 6 | 33 |
20%
|
|
| 7 | 32 |
19.4%
|
|
| 8 | 32 |
19.4%
|
|
| 9 | 14 |
8.5%
|
|
| 10 | Very effective | 7 |
4.2%
|
| -99 | 7 | ||
| 11 | Don't know | 66 | |
| Sysmiss | 22 |