| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
2.2%
|
|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
1.6%
|
|
| 3 | 5 |
2.7%
|
|
| 4 | 6 |
3.3%
|
|
| 5 | 17 |
9.3%
|
|
| 6 | 19 |
10.4%
|
|
| 7 | 46 |
25.1%
|
|
| 8 | 21 |
11.5%
|
|
| 9 | 15 |
8.2%
|
|
| 10 | Very effective | 4 |
2.2%
|
| 11 | Don't know | 43 |
23.5%
|
| Sysmiss | 82 |