| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.5%
|
|
| 1 | Not effective at all | 7 |
3.3%
|
| 2 | 5 |
2.4%
|
|
| 3 | 7 |
3.3%
|
|
| 4 | 19 |
9.1%
|
|
| 5 | 26 |
12.4%
|
|
| 6 | 33 |
15.8%
|
|
| 7 | 28 |
13.4%
|
|
| 8 | 23 |
11%
|
|
| 9 | 19 |
9.1%
|
|
| 10 | Very effective | 4 |
1.9%
|
| 11 | N/A | 0 |
0%
|
| 12 | Don't know | 37 |
17.7%
|
| Sysmiss | 16 |