| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 44 |
22.4%
|
| 2 | 27 |
13.8%
|
|
| 3 | 15 |
7.7%
|
|
| 4 | 19 |
9.7%
|
|
| 5 | 26 |
13.3%
|
|
| 6 | 16 |
8.2%
|
|
| 7 | 10 |
5.1%
|
|
| 8 | 12 |
6.1%
|
|
| 9 | 7 |
3.6%
|
|
| 10 | Very effective | 20 |
10.2%
|
| 11 | Don't know | 187 | |
| Sysmiss | 47 |