| Value | Category | Cases | |
|---|---|---|---|
| -99 | 5 |
2.2%
|
|
| 1 | Not effective at all | 5 |
2.2%
|
| 2 | 3 |
1.3%
|
|
| 3 | 4 |
1.7%
|
|
| 4 | 11 |
4.8%
|
|
| 5 | 23 |
10%
|
|
| 6 | 21 |
9.1%
|
|
| 7 | 28 |
12.1%
|
|
| 8 | 22 |
9.5%
|
|
| 9 | 17 |
7.4%
|
|
| 10 | Very effective | 18 |
7.8%
|
| 11 | Don't know | 74 |
32%
|
| Sysmiss | 6 |