Table 4.

Hazard Odds Ratios (95% Confidence Intervals) for economic and socio-demographic variables associated with infant mortality due to unintentional injury, California birth cohorts, 1999–2003^a

	OR	(95% CI)
MSA employment variable lagged at:
0 months	0.92	(0.85, 1.00)*
Ethnicity
White†	1.00
Black	1.58	(1.05,2.36)*
Hispanic	0.57	(0.42,0.77)**
Other	0.92	(0.60, 1.41)
Maternal Education
< High school graduate	1.26	(0.95, 1.67)
High school graduate†	1.00
Some college	0.60	(0.41, 0.87)**
College graduate	0.43	(0.27, 0.68)**
Infant sex
Male†	1.00
Female	0.71	(0.56, 0.90)**
Maternal Age
< 20 yrs	1.54	(1.07, 2.21)*
20–24 yrs	1.16	(0.84, 1.61)
25–29 yrs†	1.00
>30 yrs	0.73	(0.51, 1.02)

^acases and controls are matched by MSA; conditional maximum likelihood estimation was used (conditional log likelihood = −1843.18).

^†referent category

^*p < 0.05

^**p < 0.01