Abstract CE-51 Table 1 Comparison of race/ethnicity classification among SLE cases as part of a lupus surveillance registry: medical records versus Michigan birth files. Data from birth files represent the gold standard, as race/ethnicity was self-identified

		BIRTH CERTIFICATE (BC) – “gold standard”

		Race																Ethnicity

Medical Records (MR)			Black		White		Asian		NHOPI		AIAN		Other		Unknown		Total		Hispanic		Not Hispanic

Race
	Black	962		17		1		0		1		0		2		983		.		.
	White	9		563		2		3		2		0		2		581		.		.
	Asian	0		4		5		2		0		0		0		11		.		.
	NHOPI	0		3		0		0		0		0		0		3		.		.
	AIAN	0		0		0		0		1		0		0		1		.		.
	Other	2		28		1		0		0		1		0		32		.		.
	Unknown	3		15		4		0		0		0		0		22		.		.
Ethnicity
	Hispanic	.		.		.		.		.		.		.		.		20		12
	Not Hispanic	.		.		.		.		.		.		.		.		12		1589
	Total	976		630		13		5		4		1		4				32
Difference (BC-MR)		−7		49		2		2		3		−31		−17				0
Classification (BC/MR)		0.99		1.08		1.18		1.67		4.00		0.03		0.19				1.00
Sensitivity (of MR)		98.6		89.4		38.5		0.0		25.0		100.0		0.0				62.5
95% CI for sensitivity		(97.6, 99.2)		(86.7, 91.7)		(13.9, 68.4)		(0.0, 52.2)		(0.6, 80.6)		(2.5, 100.0)		(0.0, 60.2)				(43.7, 78.9)

Abbreviations: NHOP = Native Hawaiian and Other Pacific Islander; AIAN = American Indian/Alaska Native