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Table 2 Participant characteristics and descriptive statistics by child sex

From: Prenatal bisphenol a exposure and dysregulation of infant hypothalamic-pituitary-adrenal axis function: findings from the APrON cohort study

  Males (n = 66) Females (n = 66)
Maternal Variable GM(SE) Median Range GM(SE) Median Range
Age (years) 31.1 (.47) 31 24–40 30.1 (.50) 31 20–42
Pre-pregnancy BMI 24.8 (.65) 24 18.4–42.2 25.8 (.67) 25 19.1–43.1
Total BPA (ng/mL) 1.10 (.97) .89 .16–43.42 1.04 (.63) .98 .23–39.84
Creatinine (mmol/L) 6.74 (.73) 7.65 .80–32.80 7.87 (.74) 8.20 .90–24.70
Infant Variable
Gestational age at birth (weeks) 39.2 (.19) 39.3 33.0–41.7 39.3 (.17) 39.9 35.3–41.4
Birthweight (grams) 3448 (72) 3510 2030–4904 3273 (54) 3352 2215–4200
Baseline cortisol (μg/dL) .25 (.02) .24 .05–1.03 .24 (.03) .23 .06–1.51
  Percent    Percent   
Household Income
  < $20,000 1.6    1.5   
 $20 k – $40 k 6.3    3.0   
 $40 k – $70 k 4.7    18.2   
 $70 k – $100 k 23.4    27.3   
  > $100,000 64.1    50.0   
Education
 High school diploma 6.3    10.6   
 College diploma 14.1    27.3   
 University degree 79.8    62.1   
Ethnicity
 White 80.3    86.4   
 Other 19.7    13.6   
Marital status
 Married 92.3    83.3   
 Common law 7.7    15.2   
 Single/separated/divorced 0    1.5   
Nulliparous 53.0    54.5   
  1. Note. GM geometric mean. SE standard error of the mean