| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 21 |
4.1%
|
| 2 | 13 |
2.6%
|
|
| 3 | 33 |
6.5%
|
|
| 4 | 41 |
8.1%
|
|
| 5 | 79 |
15.6%
|
|
| 6 | 93 |
18.3%
|
|
| 7 | 60 |
11.8%
|
|
| 8 | 63 |
12.4%
|
|
| 9 | 53 |
10.5%
|
|
| 10 | Very effective | 51 |
10.1%
|
| 11 | Don't know | 153 | |
| Sysmiss | 59 |