| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
9.2%
|
| 2 | 3 |
3.1%
|
|
| 3 | 10 |
10.2%
|
|
| 4 | 3 |
3.1%
|
|
| 5 | 13 |
13.3%
|
|
| 6 | 7 |
7.1%
|
|
| 7 | 10 |
10.2%
|
|
| 8 | 13 |
13.3%
|
|
| 9 | 11 |
11.2%
|
|
| 10 | Very effective | 19 |
19.4%
|
| -99 | 17 | ||
| 11 | Don't know | 67 | |
| Sysmiss | 22 |