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Table 4 Density and accuracy – SNP selection by tagging or equidistancea

From: Impact of marker density on the accuracy of association mapping

   Locus C Locus D
R2 (LDU, kb) No. SNPs (kb/SNP) Tagger E_LD E_kb Tagger E_LD E_kb
Full 1658 (10) 20 20 20 130 130 130
0.8 (0.013,7) 1080b (15) 35 20 30 130 124 130
0.6 (0.025,10) 874 (18) 56 -16 27 545 124 551
0.4 (0.047,15) 657 (24) 106 42 63 124 123 117
0.2 (0.099,27) 421 (38) 125 14 -23 537 112 231
  1. aLocation error for SNPs selected by Tagger or equal LDU (E_LD) or kb (E_kb) distance in a candidate region of 15805.710 kb with rare SNPs included. Regions were fixed at 10 LDUs for Loci C (30997–33398 kb) and D (36784–37792 kb). Disease variant C was not present except in the full data set. Tilted LD map.
  2. b1079 for E_LD.