Table 1:

Cohort Characteristics

	Sex		Race
	Female (N=7,917)	Male (N=4,934)	Asian (N = 302)	Black (N=611)	White (N= 11,673)	Overall (N = 12,851)
Male (N, %)		4,934 (100%)	143 (47.4%)	222 (36.3%)	4,470 (38.3%)	4,934 (38.4%)
Race (N, %)
White	7,203 (91.0%)	4,470 (90.6%)	--	--	11673	11,673 (90.8%)
Black	389 (4.9%)	222 (4.5%)	--	611	--	611 (4.8%)
Asian	159 (2.0%)	143 (2.9%)	302	--	--	302 (2.4%)
Other	166 (2.1%)	99 (2.0%)	--	--	--	265 (2.1%)
Age (years) at first test (mean, SD)	54.9 (17.9)	54.3 (18.9)	51.6 (18.2)	52.8 (16.5)	55.0 (18.3)	54.7 (18.2)
No of tests per subject (median, IQR)	2 (1, 3)	2 (1, 3)	2 (1, 3)	2 (1, 3)	2 (1, 3)	2 (1, 3)