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Table 1 Study characteristics by infant sex

From: Umbilical cord blood androgen levels and ASD-related phenotypes at 12 and 36 months in an enriched risk cohort study

  Total (n = 137) Female (n = 62) Male (n = 75)  
Characteristics Mean SD Mean SD Mean SD P
Maternal age 34.1 4.5 33.7 4.2 34.5 4.7 0.30
Gestational age at delivery 39.4 1.6 39.4 1.4 39.3 1.7 0.68
Total number of pregnancies 3.6 1.5 3.5 1.4 3.7 1.5 0.65
Total AOSI scorea 5.0 4.3 4.7 2.0 5.2 2.3 0.45
Total SRS raw scorea 29.8   26.1 1.7 33.4 2.1 0.03
  % n % n % n  
Cesarean section 42.2 97 45.2 42 40 55 0.61
Maternal education   137   62   75 0.68
 <9th 2.9   4.8   1.3   
 High school graduation 8.0   8.1   8.0   
 College degree 63.5   62.9   64.0   
 Graduate/professional degree 25.6   24.2   26.7   
Maternal race   131   61   70 0.58
 Asian 6.8   6.6   7.1   
 Black 9.2   11.5   7.1   
 Other 11.5   13.1   10.1   
 White 64.9   59.0   70   
 Unknown 7.6   9.8   5.7   
Maternal Hispanic/Latino 19.4 129 15.2 59 22.9 70 0.27
Male older affected sibling 83.9 137 85.5 62 82.7 75 0.66
  1. aGeometric mean and geometric standard deviation