| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.7%
|
| 2 | 4 |
2.5%
|
|
| 3 | 2 |
1.2%
|
|
| 4 | 13 |
8%
|
|
| 5 | 15 |
9.2%
|
|
| 6 | 21 |
12.9%
|
|
| 7 | 24 |
14.7%
|
|
| 8 | 26 |
16%
|
|
| 9 | 38 |
23.3%
|
|
| 10 | Very effective | 14 |
8.6%
|
| -99 | 16 | ||
| 11 | Don't know | 50 | |
| Sysmiss | 25 |