| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 36 |
17.6%
|
| 2 | 12 |
5.9%
|
|
| 3 | 13 |
6.3%
|
|
| 4 | 23 |
11.2%
|
|
| 5 | 26 |
12.7%
|
|
| 6 | 28 |
13.7%
|
|
| 7 | 20 |
9.8%
|
|
| 8 | 11 |
5.4%
|
|
| 9 | 12 |
5.9%
|
|
| 10 | Very effective | 24 |
11.7%
|
| 11 | Don't know | 183 | |
| Sysmiss | 42 |