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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 groupExposed groups
Total exposed groupNon-recent/uncertain exposureRecently exposed
N13018156551160
Median age42424342
Proportion of males43%43%44%42%
Median BMI, kg/m225.125.925.726.0
PFOS4.8 (2.0, 12)160 (12, 590)45 (5.6, 270)240 (48, 660)
PFHxS0.98 (0.38, 4.8)140 (5.8, 560)40 (2.1, 250)210 (35, 630)
PFOA1.6 (0.69, 3.5)8.6 (1.3, 31)3.5 (0.96, 14)13 (2.7, 34)
sum PFASa0.017 (0.0076, 0.040)0.68 (0.040, 2.6)0.20 (0.021, 1.2)1.0 (0.19, 2.9)
Total cholesterol4.9 (3.7, 6.9)5.2 (3.6, 8.2)5.3 (3.7, 8.4)5.2 (3.6, 8)
LDL2.8 (1.9, 4.5)3.1 (1.8, 5.3)3.2 (1.9, 5.4)3.1 (1.8, 5.3)
HDL1.5 (0.86, 2.3)1.5 (0.86, 2.5)1.5 (0.88, 2.6)1.4 (0.84, 2.5)
Triglycerides1.1 (0.45, 3.6)1.3 (0.60, 3.4)1.3 (0.60, 3.4)1.3 (0.50, 3.4)
Ratiob3.2 (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