| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.5%
|
| 2 | 7 |
4.1%
|
|
| 3 | 6 |
3.5%
|
|
| 4 | 6 |
3.5%
|
|
| 5 | 19 |
11.1%
|
|
| 6 | 15 |
8.8%
|
|
| 7 | 28 |
16.4%
|
|
| 8 | 43 |
25.1%
|
|
| 9 | 30 |
17.5%
|
|
| 10 | Very effective | 11 |
6.4%
|
| -99 | 12 | ||
| 11 | Don't know | 46 | |
| Sysmiss | 25 |