BioMed Research International

Research Article

Factors Associated with Hepatitis A Vaccination Receipt in One-Year-Olds in the State of Michigan

Table 1

Baseline characteristics, by hepatitis A vaccination receipta coverage.
CharacteristicPercentage with characteristic ( 𝑛 = 1 3 4 2 2 6 )Coverage ( % ) with β‰₯ 1 dose of the vaccination 𝑃 - v a l u e βˆ— Unadjusted odds ratio ( 9 5 % C I ) d
Entire population100.0 5 5 . 8 % NA
Categorical variables
 Gender, female 4 8 . 8 % 5 6 . 1 % .081.02 (1.00, 1.04)
Race/Ethnicity
 American Indian 0 . 6 % 5 8 . 8 % .141.12 (0.96, 1.29)
 Asian/Pacific Islander 3 . 2 % 6 2 . 6 % < .0011.32 (1.24, 1.40)
 Black (non-Hispanic) 1 6 . 6 % 6 2 . 5 % < .0011.37 (1.33, 1.41)
 Hispanic 6 . 2 % 6 5 . 3 % < .0011.51 (1.44, 1.58)
 White (non-Hispanic) 6 7 . 2 % 5 3 . 4 % < .0010.67 (0.65, 0.69)
Mother’s Age
< 20 years 9 . 0 % 5 7 . 5 % < .0011.08 (1.05, 1.12)
 20–34 years 7 2 . 5 % 5 5 . 9 % < .0011.02 (1.00, 1.04)
> 35 years 1 2 . 6 % 5 3 . 0 % < .0010.88 (0.85, 0.91)
Provider type, Public
 Public 6 . 4 % 6 0 . 7 % < .0011.17 (1.12, 1.22)
 Private 4 1 . 4 % 5 6 . 9 % < .0010.86 (0.82, 0.90)
Medicaid/WIC enrollment
 Medicaid onl y b 6 . 2 % 5 7 . 1 % .011.06 (1.01, 1.11)
 WIC onl y b 1 0 . 6 % 5 5 . 3 % .190.98 (0.94, 1.01)
 Both Medicaid and WI C b 3 0 . 3 % 6 4 . 1 % < .0011.64 (1.60, 1.68)
 Neither Medicaid nor WI C b 5 2 . 9 % 5 1 . 0 % < .0010.66 (0.65, 0.67)
Rural residence 3 . 6 % 5 1 . 5 % < .0010.79 (0.74, 0.83)
MCIR Region
 Region 1 4 5 . 9 % 5 8 . 5 % < .0011.10 (1.08, 1.12)
 Region 2 2 4 . 4 % 5 8 . 7 % < .0011.09 (1.05, 1.11)
 Region 3 5 . 8 % 5 1 . 5 % < .0010.78 (0.74, 0.82)
 Region 4 1 0 . 1 % 5 9 . 6 % < .0011.11 (1.07, 1.15)
 Region 5 6 . 9 % 4 9 . 5 % < .0010.71 (0.68, 0.74)
 Region 6 2 . 4 % 4 7 . 3 % < .0010.66 (0.62, 0.71)
Continuous variableMean for unvaccinated population (SD)Mean for vaccinated population (SD)P-valueUnadjusted odds ratio ( 9 5 % CI)
No. of months recommendation in effec t c 5.5 (3.2)5.8 (3.2) < .0011.03 (1.02, 1.03)
a R eceipt of vaccination means the child has received one or more doses by the time of their 2nd birthday.
b M edicaid and WIC enrollment by the time of the child’s first birthday.
c N o. months = number of months vaccination recommendation was in effect by child’s 1st birthday.
d C hildren with the given characteristic compared with children lacking the given characteristic.
βˆ— 𝑃 -values are from chi-square tests for categorical variables and ANOVA for continuous variables.