| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.2%
|
| 2 | 3 |
1.6%
|
|
| 3 | 10 |
5.5%
|
|
| 4 | 7 |
3.8%
|
|
| 5 | 17 |
9.3%
|
|
| 6 | 9 |
4.9%
|
|
| 7 | 35 |
19.2%
|
|
| 8 | 41 |
22.5%
|
|
| 9 | 36 |
19.8%
|
|
| 10 | Very effective | 20 |
11%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 211 |