| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
4.9%
|
| 2 | 1 |
0.6%
|
|
| 3 | 4 |
2.4%
|
|
| 4 | 10 |
6.1%
|
|
| 5 | 21 |
12.8%
|
|
| 6 | 15 |
9.1%
|
|
| 7 | 18 |
11%
|
|
| 8 | 34 |
20.7%
|
|
| 9 | 17 |
10.4%
|
|
| 10 | Very effective | 36 |
22%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 93 |