| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2%
|
| 2 | 2 |
1%
|
|
| 3 | 3 |
1.5%
|
|
| 4 | 4 |
2%
|
|
| 5 | 19 |
9.3%
|
|
| 6 | 23 |
11.2%
|
|
| 7 | 33 |
16.1%
|
|
| 8 | 45 |
22%
|
|
| 9 | 29 |
14.1%
|
|
| 10 | Very effective | 43 |
21%
|
| -99 | 15 | ||
| 11 | Don't know | 79 | |
| Sysmiss | 53 |