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Table 2 Transmission disequilibrium test (TDT) for the G allele of the -1438A/G polymorphism of the 5-HT2A gene in a sample of 100 trios with schizophrenia according to good versus poor response to antipsychotics (May and Denker classification).

From: Excess of transmission of the G allele of the -1438A/G polymorphism of the 5-HT2Areceptor gene in patients with schizophrenia responsive to antipsychotics

Sample G allele χ2 p
  Transmitted Untransmitted   
All patients 50 38 1.63 0.20
Good treatment response 17 6 5.26 0.02
Poor treatment response 33 32 0.01 0.90