Table 3.

Results from adjusted analyses examining SES factors and timing of menarche stratified by race.

	Black		Hispanic		White
Variable	Hazard Ratio(CI)	p	Hazard Ratio(CI)	p	Hazard Ratio(CI)	p
Grandmother's education (Ref=College+)
Less than High school	0.79(0.62-1.01)	0.06	1.05(0.62-1.78)	0.85	1.14(0.91-1.44)	0.24
High School	0.80(0.65-0.98)	0.03	1.03(0.60-1.78)	0.92	1.09(0.95-1.24)	0.21
Mother's education at child's birth (Ref=College+)
Less than High school	1.20(0.72-2.00)	0.48	1.31(0.78-2.20)	0.31	1.29(0.59-2.80)	0.52
High School	0.92(0.75-1.13)	0.44	1.10(0.76-1.60)	0.61	1.17(0.95-1.44)	0.14
Mother's education when child was 7y(Ref=College+)
Less than High school	0.84(0.42-1.68)	0.62	0.77(0.43-1.37)	0.37	0.91(0.45-1.87)	0.80
High School	1.10(0.90-1.35)	0.34	0.75(0.53-1.07)	0.11	0.89(0.73-1.09)	0.25
Mother's marital status at birth and 7y (Ref=Married, Married)
Not married, Not married	1.01(0.85-1.19)	0.94	1.50(1.13-1.99)	0.01	1.42(1.17-1.72)	0.00
Not married, Married	0.93(0.76-1.15)	0.51	1.10(0.83-1.46)	0.51	1.18(0.95-1.46)	0.13
Married, Not married	1.23(0.98-1.55)	0.08	1.06(0.76-1.49)	0.72	1.04(0.88-1.23)	0.65
Family income quartile at child's birth(Ref = 4)
1	1.48(1.12-1.95)	0.01	1.23(0.92-1.65)	0.17	1.13(0.92-1.38)	0.24
2	1.42(1.09-1.84)	0.01	1.40(1.07-1.84)	0.02	0.99(0.83-1.18)	0.94
3	1.76(1.37-2.26)	0.00	0.94(0.74-1.19)	0.59	1.06(0.93-1.20)	0.40
Family size at birth (Ref= 1-4)
5+	1.09(0.94-1.26)	0.24	0.99(0.82-1.20)	0.94	1.15(0.99-1.34)	0.07

Note: Analyses are adjusted for all SES indicators and covariates and included missing categories; results not shown. Asians were not included in tests of interaction and subgroup analyses because of the small sample size (n=34).