| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.4%
|
| 2 | 3 |
1.4%
|
|
| 3 | 8 |
3.8%
|
|
| 4 | 8 |
3.8%
|
|
| 5 | 15 |
7.2%
|
|
| 6 | 6 |
2.9%
|
|
| 7 | 25 |
12%
|
|
| 8 | 23 |
11%
|
|
| 9 | 14 |
6.7%
|
|
| 10 | Very effective | 8 |
3.8%
|
| 11 | Don't know | 94 |
45%
|
| Sysmiss | 16 |