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Observed allele counts for SNP, where O1,1 and O1,2 are the number of alleles A and a in the case group, O2,1 and O2,1 are the corresponding counts in the control group, N1 and N2 are the total allele counts for the case and control group, respectively.
| SNP | A | a | Total |
|---|---|---|---|
| Case | O1,1 | O1,2 | Nl = O1,1 + O1,2 |
| Control | O2,1 | O2,2 | N2 = O2,1 + O2,2 |
| Total | O1,1 + O2,1 | O1,2 + O2,2 | Nl + Nl2 |
