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Table 2 Total BPA geometric means, percentiles, and maximum concentrations in maternal and child urine samples

From: Prenatal maternal and childhood bisphenol a exposure and brain structure and behavior of young children

  Detection Frequency (% > LOD) Urinary Total BPA (ng/mL)
GM (95% CI) P25% P50% P75% P95% Max
Maternal (n = 98)a 88.8 1.4 (0.5, 2.2) 0.5 1.5 2.7 10.7 34.9
Child (n= 77) b 91.0 1.0 (0.6, 1.5) 0.5 0.9 1.8 6.1 10.9
  1. LOD limit of detection, GM geometric mean, 95% CI: confidence interval of GM, P25: 25th percentile; P50: 50th percentile; P75: 75th percentile; P95: 95th percentile. MAX: maximum concentrations
  2. acollected in the second trimester of pregnancy
  3. bchild urine samples collected at 3–4 years of age; 21 children did not complete the 3–4 year urine sampling