| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
1.7%
|
|
| 1 | Not effective at all | 22 |
7.4%
|
| 2 | 15 |
5.1%
|
|
| 3 | 21 |
7.1%
|
|
| 4 | 22 |
7.4%
|
|
| 5 | 34 |
11.5%
|
|
| 6 | 45 |
15.2%
|
|
| 7 | 29 |
9.8%
|
|
| 8 | 23 |
7.8%
|
|
| 9 | 19 |
6.4%
|
|
| 10 | Very effective | 8 |
2.7%
|
| 11 | Don't know | 53 |
17.9%
|
| Sysmiss | 11 |