BMC Proceedings

Table 1 Phenotype descriptive statistics, intraclass correlation coefficients (ICCs)

From: Large-scale linkage analysis of 1302 affected relative pairs with rheumatoid arthritis

Phenotype^a	Mean	SD	N	ICC	p _ICC ^b	No. ARPs	No. pedigrees
Gender	0.61	0.49	7213	-	-	1302	982
AAO (years)	39.84	13.51	2405	0.38	<<0.001	1030	786
Definite erosion	0.90	0.30	2063	0.08	0.21	789	630
RF	1.99	1.16	2083	0.18	<<0.001	785	608
HLA	0.76	0.42	2430	-	-	870	662

^aBinary measures: - or male: 0, + or female: 1.
^bp_ICC is not corrected for multiple testing.

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ISSN: 1753-6561

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