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Table 1 A 2 × 2 table of chromosome counts: counts of chromosomes for cases and controls according to allele of a diallelic marker locus where N is the total sample size and A and a the two alleles at the locus

From: Sex chromosomes and genetic association studies

Allele

Cases

Controls

Total

A

X

N A - X

N A

a

N1 - X

N - N1 - N A + X

N a = N - N A

Total

N 1

N0 = N - N1

N

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Genome Medicine

ISSN: 1756-994X

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