| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
3.2%
|
| 2 | 8 |
3.2%
|
|
| 3 | 13 |
5.2%
|
|
| 4 | 18 |
7.2%
|
|
| 5 | 31 |
12.4%
|
|
| 6 | 29 |
11.6%
|
|
| 7 | 28 |
11.2%
|
|
| 8 | 38 |
15.1%
|
|
| 9 | 28 |
11.2%
|
|
| 10 | Very effective | 50 |
19.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 254 |