The Breast Cancer Family Registry: an infrastructure for cooperative multinational, interdisciplinary and translational studies of the genetic epidemiology of breast cancer

Table 5 Age and race/ethnicity of probands^a with a history of breast cancer from all sites (1996–2003), by ascertainment source

Parameter	Population-based case probands^b (n = 5250)	Clinic-based affected probands^b (n = 1529)	Total probands^b (n = 6779)
Age at diagnosis
<30 years	132	45	177
30–39 years	1049	300	1349
40–49 years	1809	585	2394
50–59 years	1610	344	1954
≥ 60 years	650	255	905
Race/ethnicity
White	3604	1278	4882
African-American	381	45	426
Latino	330	105	435
Chinese	248	21	269
Japanese	66	0	66
Filipino	227	0	227
Other Asian or Pacific Islander	122	7	129
Mixed or other race	130	66	196
Not reported	142	7	149
Ashkenazi Jewish heritage	232	808	1040
History of second breast cancer	261	233	494
History of breast and ovarian cancer	22	43	65
Family history of breast cancer in one or more first-degree relatives	1677	655	2332

^aProbands with completed epidemiology questionnaire. ^bProbands with a history of breast cancer.

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