| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
2.9%
|
| 2 | 16 |
3.6%
|
|
| 3 | 30 |
6.8%
|
|
| 4 | 45 |
10.2%
|
|
| 5 | 101 |
22.9%
|
|
| 6 | 86 |
19.5%
|
|
| 7 | 93 |
21%
|
|
| 8 | 39 |
8.8%
|
|
| 9 | 7 |
1.6%
|
|
| 10 | Very effective | 12 |
2.7%
|
| 11 | Don't know | 33 | |
| Sysmiss | 3 |