. Author manuscript; available in PMC: 2013 Nov 14.

Published in final edited form as: Breast Cancer Res Treat. 2011 Dec 7;132(1):10.1007/s10549-011-1900-9. doi: 10.1007/s10549-011-1900-9

Table 3.

BCRAT and updated BCRAT observed/expected ratios in the WHI

	Observed breast cancers	BCRAT		Updated BCRAT^a
		Expected breast cancers^b	O/E ratio	Expected breast cancers^b	O/E ratio
Hispanics
Main study (n = 6,353)	130	110	1.18 [0.99, 1.40]	120	1.08 [0.91, 1.28]
Non-Hispanic Whites
Main study (n = 128,976)	4,713	4,009	1.18 [1.14, 1.21]	4,788	0.98 [0.96, 1.01]

For Hispanics, BCRAT is calibrated to 1990–1996 SEER Hispanic women rates and Updated BCRAT is calibrated to 1993–2007 SEER Hispanic women rates. For NHWs, BCRAT is calibrated to 1983–1987 SEER White women rates and Updated BCRAT is calibrated to 1993–2007 SEER non-Hispanic White women rates

Expected cancers are those estimated by the BCRAT and updated BCRAT, respectively