| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.1%
|
| 2 | 4 |
4.1%
|
|
| 3 | 5 |
5.2%
|
|
| 4 | 2 |
2.1%
|
|
| 5 | 17 |
17.5%
|
|
| 6 | 17 |
17.5%
|
|
| 7 | 19 |
19.6%
|
|
| 8 | 13 |
13.4%
|
|
| 9 | 6 |
6.2%
|
|
| 10 | Very effective | 11 |
11.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 271 |