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White and black Hepatitis B vaccination rates in grades 5 and 9 before and after imposition of school-entry vaccination requirement, with measures of difference
| Grade | Year | Program | White vac rate | Black vac rate | B/W ratio no vac | W/B ratio vac | Percentage point diff | EES |
|---|---|---|---|---|---|---|---|---|
| 5 | 1996 | Pre | 8 % | 3 % | 1.05 | 2.67 | 5 | 0.47 |
| 5 | 1997 | Post | 46 % | 33 % | 1.24 | 1.39 | 13 | 0.34 |
| 9 | 1996 | Pre | 46 % | 32 % | 1.26 | 1.44 | 14 | 0.37 |
| 9 | 1997 | Post | 89 % | 84 % | 1.45 | 1.06 | 5 | 0.24 |
