Table 4.

Effects of Census Tract-Level Racial Composition, Alternative Specifications

	Birthweighta (grams)	Low Birthweightb (< 2500 g)
Effect of Proportion Black	−76.9 (−190, 36)	1.43 (.83, 2.48)
Effect of Proportion Black (ref = < .20)
.20 – .39	−141.7** (−259, −24)	1.86* (−99, 3.48)
.40 – .59	−87.1 (−205, 31)	1.27 (.67, 2.43)
.60 – .79	−73.8 (−190, 43)	1.20 (.63, 2.29)
.80 +	−116.9** (−223, −11)	1.73* (.98. 3.06)
Effect of Proportion White	57.8 (−89, 205)	1.00 (0.49, 2.03)
N	1,871	1,871

Notes:

^*p < .10

^**p < .05

^***p < .01.

All models include neighborhood poverty, child sex, parity, maternal and paternal age, maternal nativity, parents’ relationship status, maternal and paternal education, paternal employment, maternal health insurance, proportion black in city, proportion poor in city (same set of covariates as in Table 3, Model 3).

^aLinear regression coefficients and 95% confidence intervals.

^bOdds ratios and 95% confidence intervals.