There were 45 controls misclassified as FAS. In comparison to the controls that were correctly classified (n = 140), these subjects differed significantly on age (younger), FSIQ (lower), country (more from South Africa than U.S.), race (fewer White subjects), ethnicity (fewer Hispanic subjects), growth deficiency (more likely), and microcephaly (more likely). They were marginally different on weight (more likely to be ≤10th percentile; Fisher’s exact p = .056) and smooth philtrum (more likely; Fisher’s exact p = .069). They were not different on sex, handedness, height, or structural abnormality, short palpebral fissures, or thin vermillion. They differed significantly on all of the neuropsychological variables (misclassified < correctly classified).
