Table 2.

Overlap of neighborhood risk factors and at-risk birthweight hotspots

	All census tracts (%)	Low birthweight hotspots1 (% overlap)	High birthweight hotspots2 (% overlap)
Socioeconomic conditions
Excessive housing cost3	42.8	77.5	17.7
Crowded housing4	33.6	40.7	21.0
Unemployment5	32.5	75.8	12.9
Uninsured6	31.9	40.5	47.6
Food environment
Fast food7	44.7	94.1	16.1
Convenience stores8	35.4	61.3	46.0

Geographic hotspots identified using the Getis-Ord Gi-star statistic where prevalence estimates demonstrated statistically significant clustering at a confidence level of 95%

¹Infants born < 2500 g

²Infants born ≥ 4000 g

³Households where ≥ 30% of household income is spent on housing costs

⁴More than 1 persons per room

⁵Persons aged ≥ 16 years unemployed but seeking work

⁶Current lack of health insurance among people aged 0–64 years

⁷Proportion of restaurants within census tract categorized as fast food

⁸Proportion of retail food stores within census tract categorized as convenience stores