| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2%
|
| 2 | 1 |
1%
|
|
| 3 | 2 |
2%
|
|
| 4 | 7 |
7%
|
|
| 5 | 7 |
7%
|
|
| 6 | 11 |
11%
|
|
| 7 | 19 |
19%
|
|
| 8 | 27 |
27%
|
|
| 9 | 16 |
16%
|
|
| 10 | Very effective | 8 |
8%
|
| 11 | Don't know | 32 | |
| Sysmiss | 6 |