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Table 2 Third Trimester Geometric Mean and Selected Percentiles of Uncorrected and Dilution Corrected Urinary Bisphenol-A Concentrations Among Mexican Women

From: Bisphenol a exposure in Mexico City and risk of prematurity: a pilot nested case control study

BPA

Metabolite

N

Geometric Mean

Percentile

   

10 th

25th

50 th

75 th

90 th

95 th

Max

All Participants

         

BPA (μg/L) uncorrected

60

1.52

0.20

0.55

0.95

1.80

3.15

5.70

6.70

BPA (μg/L) SG corrected

60

1.45

0.31

0.70

1.03

1.56

3.98

4.36

6.89

BPA (μg/g) Cr corrected

60

1.95

0.41

0.93

1.38

2.01

5.20

6.46

7.47

Women who Delivered (> 37 weeks)

BPA (μg/L) uncorrected

30

0.97

0.20

0.20

0.80

1.10

2.05

3.40

3.90

BPA (μg/L) SG corrected

30

1.20

0.31

0.58

1.01

1.40

2.45

4.20

4.20

BPA (μg/g) Cr corrected

30

1.70

0.31

0.69

1.31

1.79

4.00

6.09

6.18

Women who Delivered (≤ 37 weeks)

BPA (μg/L) uncorrected

30

1.84

0.35

0.70

1.05

2.20

5.70

6.40

6.70

BPA (μg/L) SG corrected

30

1.71

0.44

0.81

1.05

1.65

4.28

4.57

6.89

BPA (μg/g) Cr corrected

30

2.20

0.72

1.02

1.44

2.10

6.07

7.03

7.47

Subset of Women who Delivered Preterm (< 37 weeks)

BPA (μg/L) uncorrected

12

2.18

0.80

0.80

1.15

2.65

6.20

6.70

6.70

BPA (μg/L) SG corrected

12

1.94

0.93

1.04

1.41

2.63

3.91

4.57

4.57

BPA (μg/g) Cr corrected

12

2.54

1.08

1.44

1.69

3.00

5.40

7.47

7.47