Table 1.

Demographic characteristics, n = 36

	Normal weight (BMI < 25) n = 18	Obese (BMI ≥ 30)b n = 18	p-value
Age (mean, range)a	45.0 (40–52)	45.1 (41–46)	0.88
BMI (mean, 95% CI)a,b	22.4 (21.6–23.2)	37.6 (34.2–40.8)	<0.001
Racec,d			0.001
Caucasian	15 (88%)	6 (33%)
African American	2 (12%)	12 (67%)
Current smokingc,e
Yes	2 (11%)	9 (50%)	0.01
No	16 (89%)	9 (50%)
# Cigarettes/week (median, range)	0 (0–140)	5 (0–140)	0.02
Current alcohol usec,e
Yes	15 (83%)	4 (22%)	<0.001
No	3 (17%)	14 (78%)
# Alcoholic drinks/week (median, range)	2.8 (0–42)	0 (0–6)	0.002

^aStudent's t-test

^bOne subject with BMI = 28 kg/m² was grouped with obese women for analysis

^cX² test

^dOne normal weight subject was Asian-American

^eWilcoxon rank sum test