| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
4.1%
|
| 2 | 5 |
5.1%
|
|
| 3 | 7 |
7.1%
|
|
| 4 | 8 |
8.2%
|
|
| 5 | 12 |
12.2%
|
|
| 6 | 16 |
16.3%
|
|
| 7 | 10 |
10.2%
|
|
| 8 | 22 |
22.4%
|
|
| 9 | 8 |
8.2%
|
|
| 10 | Very effective | 6 |
6.1%
|
| -99 | 10 | ||
| 11 | Don't know | 128 | |
| Sysmiss | 24 |