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Table 1 Ages and allele frequencies of study subjects

From: Testing for association of the monoamine oxidase A promoter polymorphism with brain structure volumes in both autism and the fragile X syndrome

  Idiopathic autism FXS - ASD FXS + ASD
MAOA allele High Low High Low High Low
n 21 13 20 10 10 7
Age, mean ± sd (years) 2.7 ± 0.4 2.8 ± 0.2 2.8 ± 0.7 2.9 ± 0.6 3.0 ± 0.6 3.0 ± 0.6
IQ 54 ± 7 52 ± 7 51 ± 4 50 ± 4 60 ± 12 54 ± 5
Adaptive behavior 61 ± 6 58 ± 6 57 ± 6 57 ± 4 68 ± 12 60 ± 3
  1. Estimate of IQ is from the Mullen Composite Standard Scale score.
  2. Adaptive behavior estimate is from the Vineland Adaptive Behavior Composite.