Table 1.

Characteristics of Cases and Controls

	Cases (n = 1201)	Controls (n = 1154)	p-value *
Age (yrs), mean ± SD	40.8 ± 7.1	38.6 ±7.4	<0.01
Male, %	52.0	46.5	0.01
White, % †	50.1	56.9	<0.01
Hypertension, %	42.3	18.1	<0.01
Diabetes, %	16.9	4.6	<0.01
Current smoker, %	44.8	29.4	<0.01
BMI (kg/m2), mean (SD)	29.7 ± 7.6	27.6 ±6.1	<0.01
BMI categories, (%)			<0.0001
<18.5	2.3	2.4
18.5–24.9	27.0	35.6
25.0–29.9	31.3	33.0
>30.0	39.5	29.0

BMI indicates body mass index

^*p-value for association with case/control status computed by t-test or chi-square.

^†Non-whites include: African American (44.8% cases vs. 38.3% controls) and other ethnicity (5.1% cases vs. 4.8% controls).