| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
3.9%
|
| 2 | 15 |
4.1%
|
|
| 3 | 41 |
11.3%
|
|
| 4 | 55 |
15.2%
|
|
| 5 | 74 |
20.4%
|
|
| 6 | 62 |
17.1%
|
|
| 7 | 32 |
8.8%
|
|
| 8 | 41 |
11.3%
|
|
| 9 | 14 |
3.9%
|
|
| 10 | Very effective | 15 |
4.1%
|
| 11 | Don't know | 108 | |
| Sysmiss | 7 |