| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missed | 0 |
0%
|
| 1 | Very effective | 609 |
50.8%
|
| 2 | Somewhat effective | 490 |
40.9%
|
| 3 | Not very effective | 67 |
5.6%
|
| 4 | Not at all effective | 13 |
1.1%
|
| 9 | Don't know | 20 |
1.7%
|
| 98 | Refused | 0 |
0%
|