| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 4 | 2 |
2.1%
|
|
| 5 | 5 |
5.3%
|
|
| 6 | 6 |
6.4%
|
|
| 7 | 10 |
10.6%
|
|
| 8 | 31 |
33%
|
|
| 9 | 20 |
21.3%
|
|
| 10 | Very effective | 20 |
21.3%
|
| -99 | 7 | ||
| 11 | Don't know | 49 | |
| Sysmiss | 7 |