Table 1

Pearson correlation matrix of state level infant mortality, low birth weight, income inequality, primary care, and sociodemographic indicators, 1985–1995†

n = 549Low birth weightInfant mortality rateGiniPrimary careAfrican-AmericanMetroUnemployedEducation
†Range (lowest to highest) of correlation from 1985 to 1995. The correlation was considered statistically significant only if every year’s correlation coefficient was statistically significant, otherwise, no asterisk labelled. The bottom row is the range of means for each predictor from 1985 to 1995. *<0.05; **0.01. Sources, see references.22–25,27
Low birth weight1.00
Infant mortality per 1000 live births (infant)0.56 to 0.77**1.00
Gini coefficient (Gini)0.32 to 0.650.14 to 0.501.00
Office based patient primary care doctor ratio (primary care supply)−0.28 to −0.45*−0.32 to −0.53**−0.01 to 0.111.00
Proportion (%) African-American (African-American)0.81 to 0.87**0.70 to 0.83**0.28 to 0.69−0.16 to −0.381.00
Proportion (%) of metropolitan population (Metro)0.17 to 0.31−0.02 to −0.080.01 to 0.430.24 to 0.350.21 to 0.291.00
Proportion (%) of unemployed population (unemployed)0.19 to 0.35−0.10 to 0.350.15 to 0.60−0.03 to −0.510.17 to 0.26−0.05 to 0.331.00
% Population ⩾25 years and completed 12 years of education (education)−0.60 to −0.70**−0.52 to −0.67**−0.37 to −0.66**0.27 to 0.47−0.67 to −0.70**0.03 to 0.07−0.16 to −0.431.00
Mean6.6 to 7.1755 to 10570.40 to 0.435.02 to 6.040.09 to 0.1063.4 to 67.05.2 to 7.167.5 to 78.5