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Table 2 Distribution of polymorphisms of the MAO-A gene in the ODD group and controls

From: Associations of serotonin transporter gene promoter polymorphisms and monoamine oxidase A gene polymorphisms with oppositional defiant disorder in a Chinese Han population

Genotype 3/3 (%) 3/4 and 4/4 (%) χ2 P
Male
 ODD (n = 70) 13 (18.6) 57 (81.4) 4.624 0.032*
 Controls (n = 66) 23 (34.8) 43 (65.2)   
 OR(95%CI) 0.43 (0.94–0.19) 2.35 (1.07–5.15)   
Female
 ODD (n = 53) 5 (9.4%) 48 (90.6%) 1.664 0.197
 Controls (n = 68) 12 (17.6%) 56 (82.4%)   
 OR(95%CI) 0.49 (0.16–1.48) 2.06 (0.68–6.26)   
Alleles
 Female
  ODD (n = 53) 10 (9.4%) 96 (90.6%) 3.328 0.068
  Controls (n = 68) 24 (17.6%) 112 (82.4%)   
  1. df = 1, *P < 0.05