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Table 1 Descriptive statistics on the study group for adults 20 to 60 years

From: Associations between perfluoroalkyl substances and serum lipids in a Swedish adult population with contaminated drinking water

 

Control group

Exposed groups

Total exposed group

Non-recent/uncertain exposure

Recently exposed

N

130

1815

655

1160

Median age

42

42

43

42

Proportion of males

43%

43%

44%

42%

Median BMI, kg/m2

25.1

25.9

25.7

26.0

PFOS

4.8 (2.0, 12)

160 (12, 590)

45 (5.6, 270)

240 (48, 660)

PFHxS

0.98 (0.38, 4.8)

140 (5.8, 560)

40 (2.1, 250)

210 (35, 630)

PFOA

1.6 (0.69, 3.5)

8.6 (1.3, 31)

3.5 (0.96, 14)

13 (2.7, 34)

sum PFASa

0.017 (0.0076, 0.040)

0.68 (0.040, 2.6)

0.20 (0.021, 1.2)

1.0 (0.19, 2.9)

Total cholesterol

4.9 (3.7, 6.9)

5.2 (3.6, 8.2)

5.3 (3.7, 8.4)

5.2 (3.6, 8)

LDL

2.8 (1.9, 4.5)

3.1 (1.8, 5.3)

3.2 (1.9, 5.4)

3.1 (1.8, 5.3)

HDL

1.5 (0.86, 2.3)

1.5 (0.86, 2.5)

1.5 (0.88, 2.6)

1.4 (0.84, 2.5)

Triglycerides

1.1 (0.45, 3.6)

1.3 (0.60, 3.4)

1.3 (0.60, 3.4)

1.3 (0.50, 3.4)

Ratiob

3.2 (2.1, 6.5)

3.6 (2.2, 6.3)

3.5 (2.2, 6.3)

3.6 (2.2, 6.7)

  1. Note: The units for PFOS, PFHxS and PFOA are ng/ml, the unit for sum PFAS is nmol/ml, The units for total cholesterol, LDL and HDL are mmol/L. The numbers presented for PFAS and blood lipids are medians and 5th, 95th percentiles in parentheses
  2. aSum PFAS: A molar-weight adjusted sum of PFOS, PFHxS and PFOA
  3. bRatio: the ratio of total cholesterol to HDL