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Neighborhood risk factors associated with hotspots of at-risk birthweights. Y-axis depicted on a logarithmic scale for visual accuracy; Logistic regression [aOR (95% CI), *p < 0.05; **p < 0.01; ***p < 0.001]; factors dichotomized at highest quartile prevalence, model also includes age, sex, race/ethnicity, income; 1% excessive housing cost (> 30% income); 2% crowded (> 1 person/ room); 3% unemployment (> 16 years old seeking work); 4% uninsured (between 0 and 64 years old)
