Table 1– Summary of datasets included in the initial analysis^#

Group	Countries	Males		Females
		N	Age range yrs	N	Age range yrs
African–American	1	1529	6–85	2029	6.1–87
India and Pakistan	2	2837	4–86	3003	3–79
Latin America	5	2337	6.7–89.4	2578	7.4–89.7
Mexican–American	1	1622	6.2–86	2282	6.5–87
Iran	1	3398	5–85	2739	5–80
Oman	1	638	6–65	618	6–65
North East Asia	2	2176	15.3–91	4526	15.5–90
South East Asia	4	4187	3.3–88	6371	3.1–92
North Africa	2	541	6–78	602	6–90
Caucasian	14	24229	2.5–95	28844	2.5–95
Other		199	6.2–93	474	5.8–91
Total	33	43693	2.5–95	54066	2.5–95

^#: total sample included 97,759 subjects.