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Table 1 Demographic differences between the preterm birth and term birth children with autism spectrum disorder (ASD)

From: Behavioral characteristics of autism spectrum disorder in very preterm birth children

Variable Preterm ASD n = 18 Term ASD n = 44 P value
Gestational age, mean (SD), weeks 28 (2) 39 (1) < 0.001
Birth body weight, mean (SD), grams 1024 (267) 3196 (391) < 0.001
Age of examination, mean (SD), months 62 (4) 64 (16) 0.25
Male, n (%) 12 (67%) 38 (86%) 0.09
Intellectual disability, n (%) 4 (22%) 15 (34%) 0.54
Intelligence quotient, mean (SD); range 83 (16); 62–108 79 (23); 34–113 0.66