Demographic and biologic influences on survival in whites and blacks: 40 years of follow-up in the Charleston heart study

Table 3 Hazard ratios (HR) and 95% confidence intervals (CI) obtained from Cox proportional hazards models predicting time to death among women

Baseline characteristic	Model 1		Model 2		Model 3
	HR	95% CI	HR	95% CI	HR	95% CI
White ethnicity	0.70	0.61, 0.80	0.81	0.68, 0.96	0.90	0.75, 1.08
Baseline age (years)	1.09	1.08, 1.10	1.09	1.08, 1.10	1.09	1.08, 1.09
Employed	-		0.98	0.85, 1.13	0.98	0.86, 1.13
Education (years)	-		0.97	0.95, 0.99	0.98	0.96, 1.00
Current smoker	-		-		1.40	1.21, 1.61
Former smoker	-		-		1.35	1.05, 1.74
BMI (kg/m²)	-		-		1.02	1.01, 1.03
Total serum cholesterol*	-		-		1.02	1.01, 1.04
History of diabetes	-		-		1.81	1.31, 2.51
Elevated blood pressure**	-		-		1.42	1.21, 1.66

* The hazard ratio associated with total serum cholesterol is for a 10 mg/Dl increase.
** See text for elevated blood pressure definition.

ISSN: 1475-9276