| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 18 |
6.7%
|
| 2 | 11 |
4.1%
|
|
| 3 | 18 |
6.7%
|
|
| 4 | 23 |
8.6%
|
|
| 5 | 44 |
16.5%
|
|
| 6 | 41 |
15.4%
|
|
| 7 | 31 |
11.6%
|
|
| 8 | 31 |
11.6%
|
|
| 9 | 22 |
8.2%
|
|
| 10 | Very effective | 28 |
10.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 238 |