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Table 1 Summary of studies included in the meta-analysis

From: Novel approach for genome scan meta-analysis of rheumatoid arthritis: a kernel-based estimation procedure

   No. of families  
Study Population Total 2 siblings >2 siblings No. of microsatellite markers
NARAC U.S. Caucasian 757 208 535 396
ECRAF French 88 16 72 1089
UK U.K. Caucasian 372 158 213 369