Characteristic

2011-2012 NHANES

2013-2014 NHANES

Both sexes

Males

Females

Both sexes

Males

Females

N

287

145

142

344

185

159

Age, M (SD)

14.87 (1.94)

14.86 (1.94)

14.88 (1.94)

15.08 (1.96)

15.19 (1.97)

14.96 (1.95)

Race/ethnicity, n (%)

Non-Hispanic white

64 (22.30%)

33 (22.76%)

31 (21.83%)

93 (27.03%)

54 (29.19%)

39 (24.53%)

Non-Hispanic black

86 (29.97%)

48 (33.10%)

38 (26.76%)

79 (22.97%)

45 (24.32%)

34 (21.38%)

Hispanic

81 (28.22%)

40 (27.59%)

41 (28.88%)

123 (35.76%)

63 (34.05%)

60 (37.73%)

Other

56 (19.51%)

24 (16.55%)

32 (22.54%)

49 (14.24%)

23 (12.43%)

26 (16.35%)

PFUA (ng/mL), GM (SD)

0.10 (1.77)

0.10 (1.77)

0.10 (1.77)

0.09 (1.62)

0.09 (1.64)

0.09 (1.61)

Min-max (ng/mL)

0.07 - 0.58

0.07 - 0.58

0.07 - 0.56

0.07 - 0.80

0.07 - 0.80

0.07 - 0.70

Detection rate (%)

41.11%

38.62%

43.66%

20.93%

22.16%

19.50%

PFDeA (ng/mL), GM (SD)

0.15 (1.74)

0.15 (1.72)

0.14 (1.75)

0.13 (1.88)

0.14 (1.94)

0.13 (1.81)

Min-max (ng/mL)

0.07 - 0.64

0.07 - 0.63

0.07 - 0.64

0.07 - 1.70

0.07 - 1.70

0.07 - 1.30

Detection rate (%)

77.00%

80.69%

73.24%

69.48%

71.35%

67.30%

Me-PFOSA-AcOH (ng/mL), GM (SD)

0.12 (2.38)

0.14 (2.52)

0.11 (2.21)

0.11 (2.10)

0.12 (2.10)

0.11 (2.09)

Min-max (ng/mL)

0.06 - 3.29

0.06 - 3.29

0.06 - 1.24

0.07 - 2.00

0.07 - 1.80

0.07 - 2.00

Detection rate (%)

54.01%

57.93%

50.00%

43.02%

47.03%

38.36%

Weight (kg), GM (SD)

64.01 (1.34)

68.45 (1.35)

59.77 (1.32)

64.44 (1.32)

68.73 (1.33)

59.78 (1.28)

Waist circumference (cm), GM (SD)

80.97 (1.21)

82.15 (1.21)

79.79 (1.20)

81.34 (1.19)

82.96 (1.20)

79.49 (1.17)

BMI (kg/m2), GM (SD)

23.71 (1.29)

23.88 (1.29)

23.54 (1.28)

23.69 (1.26)

23.93 (1.27)

23.40 (1.25)

Height (m), GM (SD)

164.31 (1.06)

169.32 (1.06)

159.35 (1.04)

164.94 (1.06)

169.45 (1.06)

159.85 (1.04)