| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.3%
|
| 2 | 9 |
2.3%
|
|
| 3 | 19 |
4.9%
|
|
| 4 | 28 |
7.3%
|
|
| 5 | 50 |
13%
|
|
| 6 | 48 |
12.5%
|
|
| 7 | 86 |
22.4%
|
|
| 8 | 73 |
19%
|
|
| 9 | 36 |
9.4%
|
|
| 10 | Very effective | 30 |
7.8%
|
| -99 | 48 | ||
| 11 | Don't know | 92 | |
| Sysmiss | 133 |