| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.9%
|
| 2 | 6 |
5.1%
|
|
| 3 | 7 |
5.9%
|
|
| 4 | 6 |
5.1%
|
|
| 5 | 20 |
16.9%
|
|
| 6 | 21 |
17.8%
|
|
| 7 | 13 |
11%
|
|
| 8 | 10 |
8.5%
|
|
| 9 | 15 |
12.7%
|
|
| 10 | Very effective | 13 |
11%
|
| -99 | 18 | ||
| 11 | Don't know | 93 | |
| Sysmiss | 25 |