Table 2– Subjects in the groups for which prediction equations were derived^#

Group	Males		Females		Total
	N	Age range yrs	N	Age range yrs
Caucasian	25827	2.5–95	31568	2.5–95	57395
African–American	1520	6–85	2025	6.1–87	3545
North East Asian	1414	16–91	3578	16–88	4992
South East Asian	3095	3.3–86	5160	3.2–92	8255
Total	31856		42331		74187

^#: the countries of origin are listed in table E1 in the online supplementary data.