| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
5.6%
|
| 2 | 6 |
2.6%
|
|
| 3 | 8 |
3.5%
|
|
| 4 | 23 |
10%
|
|
| 5 | 28 |
12.1%
|
|
| 6 | 39 |
16.9%
|
|
| 7 | 25 |
10.8%
|
|
| 8 | 25 |
10.8%
|
|
| 9 | 17 |
7.4%
|
|
| 10 | Very effective | 47 |
20.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 274 |