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Table 1 Median (25–75th percentile) of maternal osmolality adjusted urinary BPA according to maternal and child characteristics in 832 mother-child pairs

From: Maternal urinary concentrations of bisphenol A during pregnancy and birth size in children from the Odense Child Cohort

Maternal and child characteristics

Bisphenol A (ng/ml(osma))

All offspring, N = 832

Male offspring, n = 444

Female offspring, n = 388

N (%)

[ng/ml(osma)]

N (%)

[ng/ml(osma)]

N (%)

[ng/ml(osma)]

Maternal age (years)

      

 < 25

73 (8.8)

1.46 (0.59; 2.41)

42 (9.5)

1.46 (0.64; 2.52)

31 (8.0)

1.50 (0.42; 2.33)

 25–34

562 (67.6)

1.30 (0.55; 2.44)

294 (66.2)

1.38 (0.53; 2.37)

268 (69.1)

1.24 (0.56; 2.45)

 > 34

197 (23.7)

1.41 (0.50; 2.39)

108 (24.3)

1.41 (0.55; 2.36)

89 (22.9)

1.39 (0.45; 2.43)

Maternal pre-pregnancy BMIb(kg/m2)

     

 <20

87 (10.5)

1.33 (0.35; 1.95)

47 (10.6)

1.10 (0.35; 1.96)

40 (10.3)

1.49 (0.44; 1.98)

 20–25

432 (51.9)

1.28 (0.52; 2.38)

226 (50.9)

1.31 (0.50; 2.32)

206 (53.1)

1.19 (0.52; 2.51)

 > 25

313 (37.6)

1.45 (0.64; 2.51)

171 (38.5)

1.53 (0.68; 2.60)

142 (36.6)

1.34 (0.61; 2.38)

Maternal smoking during pregnancy

     

 No

804 (96.6)

1.32 (0.53; 2.38)

427 (96.2)

1.40 (0.53; 2.38)

377 (97.2)

1.26 (0.53; 2.38)

 Yes

28 (3.4)

1.42 (0.76; 2.82)

17 (3.8)

1.21 (0.81; 2.73)

11 (2.8)

2.28 (0.22; 2.91)

Educational status

      

 High school or less

236 (28.4)

1.48 (0.57; 2.51)

136 (30.6)

1.55 (0.57; 2.53)

100 (25.8)

1.41 (0.57; 2.51)

 High school + 1–4 years

431 (51.8)

1.26 (0.56; 2.38)

229 (51.6)

1.28 (0.50; 2.40)

202 (52.1)

1.19 (0.61; 2.38)

 High School + > 4 years

165 (19.8)

1.30 (0.42; 2.24)

79 (17.8)

1.40 (0.62; 2.01)

86 (22.2)

1.29 (0.26; 2.38)

Parity

      

 Nulliparous

472 (56.7)

1.45 (0.55; 2.64)*

256 (48.4)

1.46 (0.56; 2.52)

216 (55.7)

1.44 (0.53; 2.87)*

 Multiparous

360 (43.3)

1.23 (0.53; 2.12)*

188 (42.3)

1.29 (0.53; 2.22)

172 (44.3)

1.13 (0.54; 1.97)*

Gestational days at birth

      

 Preterm (< 259)

33 (3.9)

1.13 (0.62; 2.00)

17 (2.10)

1.31 (0.89; 1.87)

16 (1.90)

1.00 (0.55; 2.20)

 Term (≥ 259)

799 (94.9)

1.33 (0.53; 2.43)

427 (50.7)

1.40 (0.53; 2.41)

372 (44.2)

1.28 (0.52; 2.44)

Sex

      

 Male

444 (53.4)

1.39 (0.55; 2.39)

444 (100.0)

1.39 (0.55; 2.39)

na

na

 Female

388 (46.6)

1.28 (0.53; 2.43)

na

na

388 (100.0)

1.28 (0.53; 2.43)

Birth weight (g)

      

 < 3000

124 (53.4)

1.29 (0.64; 2.13)

52 (11.7)

1.55 (0.86; 2.25)

72 (18.6)

1.14 (0.57; 2.03)

 3000–4000

555 (66.7)

1.40 (0.54; 2.66)

293 (66.0)

1.43 (0.47; 2.66)

262 (67.5)

1.31 (0.58; 2.64)

 > 4000

153 (18.4)

1.18 (0.39; 2.12)

99 (22.3)

1.20 (0.53; 2.11)

54 (13.9)

1.08 (0.08; 2.21)

Ponderal Index (g/cm3)

      

 < 2.2

83 (10.0)

1.02 (0.61; 2.00)

46 (10.4)

1.08 (0.68; 1.95)

37 (9.5)

0.92 (0.42; 2.00)

 2.2-3.0

731 (87.9)

1.39 (0.55; 2.47)

388 (87.4)

1.42 (0.54; 2.46)

343 (88.4)

1.31 (0.55; 2.51)

 > 3.0

18 (2.2)

1.21 (0.08; 1.43)

10 (2.3)

1.21 (0.18; 1.43)

18 (2.2)

0.74 (0.08; 2.13)

  1. aOsm: osmolality
  2. bBMI: body-mass index
  3. *p < 0.05, Kruskal Wallis test
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Environmental Health

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