TABLE 3.

Hierarchical Multinomial Logistic Regression Estimating Competing Risk of Low Birth Weight by Cause: Michigan Metropolitan Areas, 2000

	Intrauterine Growth Restriction, OR (95% CI)	Preterm Birth, OR (95% CI)
Maternal characteristics
Age	1.010* (1.005, 1.015)	1.019* (1.014, 1.025)
Race	1.923* (1.746, 2.119)	2.372* (2.136, 2.635)
Census tract characteristics
White segregated	1.102 (0.984, 1.234)	0.988 (0.871, 1.119)
Black nonsegregated	1.208* (1.095, 1.333)	0.998 (0.893, 1.115)
Black segregated	1.187*** (1.029, 1.370)	1.106 (0.944, 1.294)
Poor segregated	1.066 (0.950, 1.196)	1.042 (0.913, 1.189)
Vacancies, %	1.157* (1.078, 1.242)	0.973 (0.901, 1.051)
Women with college education, %	0.995* (0.993, 0.998)	0.996** (0.993, 0.999)

Note. CI = confidence interval; OR = odds ratio. Models included fixed effects for metropolitan statistical area.

*P < .05; **P < .01; ***P < .001.