| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
8.3%
|
| 2 | 9 |
5.8%
|
|
| 3 | 10 |
6.4%
|
|
| 4 | 18 |
11.5%
|
|
| 5 | 27 |
17.3%
|
|
| 6 | 23 |
14.7%
|
|
| 7 | 28 |
17.9%
|
|
| 8 | 22 |
14.1%
|
|
| 9 | 4 |
2.6%
|
|
| 10 | Very effective | 2 |
1.3%
|
| 11 | Don't know | 81 | |
| Sysmiss | 52 |