| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
2%
|
|
| 1 | Not effective at all | 1 |
1%
|
| 2 | 1 |
1%
|
|
| 3 | 8 |
8%
|
|
| 4 | 3 |
3%
|
|
| 5 | 13 |
13%
|
|
| 6 | 11 |
11%
|
|
| 7 | 10 |
10%
|
|
| 8 | 11 |
11%
|
|
| 9 | 5 |
5%
|
|
| 10 | Very effective | 6 |
6%
|
| 11 | Don't know | 29 |
29%
|
| Sysmiss | 7 |