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Table 4 Analysis of association between maternal age at pregnancy and MAO variants of male ADHD probands

From: Pilot study indicate role of preferentially transmitted monoamine oxidase gene variants in behavioral problems of male ADHD probands

Genes Variants Alleles ≤ 26 yrs > 26 yrs Chi-square (p-value) Relative risk (95% confidence interval)
MAOA 30 bp-uVNTR 3R 0.76 0.61 4.03 (0.05) 1.26 (1.01 – 1.57)
4R 0.24 0.39  
rs5906883 A 0.73 0.61 2.66 (0.10)
C 0.27 0.39  
rs1465107 G 0.25 0.36 2.3 (0.13)
A 0.75 0.64  
rs1465108 A 0.75 0.64 2.3 (0.13)
G 0.25 0.36  
rs5905809 C 0.28 0.39 2.09 (0.15)
G 0.72 0.61  
rs5906957 A 0.72 0.61 2.09 (0.15)
G 0.28 0.39  
rs6323 T 0.15 0.33 7.22 (0.007) 1.27 (1.06 – 1.52)
G 0.85 0.67  
rs1137070 C 0.25 0.40 3.87 (0.05) 1.23 (1.00 – 1.54)
T 0.75 0.60  
MAOB rs4824562 A 0.83 0.81 0.06 (0.81)
G 0.17 0.19  
rs56220155 G 0.33 0.20 3.66 (0.06) 1.19 (1.00 – 1.44)
A 0.67 0.80  
rs2283728 T 0.23 0.16 0.98 (0.32)
C 0.77 0.84  
rs2283727 C 0.77 0.84 0.98 (0.32)
A 0.23 0.16  
rs3027441 C 0.25 0.15 2.51 (0.11)
T 0.75 0.85  
rs6324 C 0.75 0.85 2.51 (0.11)
T 0.25 0.15  
rs3027440 T 0.83 0.86 0.31 (0.58)
C 0.17 0.14  
  1. Statistically significant differences are presented in bold