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Table 3 Weighted geometric means of urinary omethoate, bisphenol A and 3-OHBaP by sex and BMI group among freshmen aged 17–19 years in China

From: Urinary levels of dimethoate, bisphenol A and benzo[a]pyrene in first-year students of Hohai University from different geographical regions

 

Total

Males

Females

BMI group

Geometric mean

95%

confidence interval

Geometric mean

95%

confidence interval

Geometric mean

95%

confidence interval

from

to

from

to

from

To

Urinary omethoate

 Total

μg/L (μg/g)

9.47 (10.80)

9.28 (10.58)

9.67 (11.02)

10.64 (11.11)

10.34 (10.76)

10.95 (11.46)

8.55‡(10.53‡)

8.35 (10.26)

8.74 (10.80)

  < 18.5

μg/L (μg/g)

8.74 (10.01)

8.28 (9.48)

9.23 (10.57)

9.66 (10.33)

9.02 (9.66)

10.36 (11.06)

7.88 (9.68)

7.39 (8.86)

8.40 (10.58)

 18.5 to 23.9†

μg/L (μg/g)

9.12 (10.43)

8.96 (10.23)

9.29 (10.62)

10.19 (10.60)

9.95 (10.32)

10.42 (10.89)

8.30 (10.28)

8.13 (10.01)

8.47 (10.55)

  > 23.9

μg/L (μg/g)

14.68*(16.21*)

13.68 (15.13)

15.75 (17.37)

17.49*(18.16*)

16.10 (16.27)

19.00 (20.27)

12.41*(14.54*)

11.68 (13.63)

13.18 (15.51)

Urinary bisphenol A

 Total

μg/L (μg/g)

3.54 (4.04)

3.48 (3.96)

3.61 (4.12)

3.52 (3.68)

3.43 (3.57)

3.62 (3.79)

3.56 (3.79)

3.49 (4.28)

3.65 (4.50)

  < 18.5

μg/L (μg/g)

2.93*(3.35)

2.79 (3.15)

3.07 (3.56)

2.83 (3.03)

2.64 (2.83)

3.04 (3.24)

3.03 (3.72)

2.84 (3.41)

3.23 (4.07)

 18.5 to 23.9†

μg/L (μg/g)

3.50 (4.00)

3.44 (3.91)

3.55 (4.08)

3.47 (3.61)

3.39 (3.51)

3.55 (3.71)

3.52 (4.36)

3.44 (4.24)

3.60 (4.47)

  > 23.9

μg/L (μg/g)

4.94*(5.46*)

4.70 (5.14)

5.20 (5.80)

5.13*(5.32*)

4.72 (4.77)

5.57 (5.94)

4.77*(5.59*)

4.49 (5.24)

5.07 (6.00)

Urinary 3-OHBaP

 Total

μg/L (μg/g)

0.34 (0.39)

0.33 (0.38)

0.35 (0.40)

0.38 (0.40)

0.37 (0.39)

0.39 (0.41)

0.31‡(0.38‡)

0.30 (0.37)

0.32 (0.39)

  < 18.5

μg/L (μg/g)

0.27*(0.31)

0.25 (0.29)

0.28 (0.32)

0.29 (0.31)

0.27 (0.29)

0.31 (0.33)

0.25 (0.30)

0.23 (0.28)

0.26 (0.33)

 18.5 to 23.9†

μg/L (μg/g)

0.34 (0.39)

0.33 (0.38)

0.35 (0.40)

0.38 (0.40)

0.37 (0.39)

0.39 (0.41)

0.31 (0.38)

0.30 (0.37)

0.32 (0.39)

  > 23.9

μg/L (μg/g)

0.45*(0.50*)

0.42 (0.46)

0.48 (0.53)

0.52*(0.54*)

0.48 (0.49)

0.57 (0.61)

0.39*(0.45*)

0.37 (0.43)

0.41 (0.48)

  1. Note. † reference category
  2. * significantly different from the estimate for the reference category (P < 0.05)
  3. ‡ significantly different from the estimate for males (P < 0.05)
  4. The numbers in parentheses are creatinine standardized concentrations
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