Table 1 Baseline serum PFOA concentrations (ppb) for Hoosick Falls participants, by sex and by age, and NHANES concentrations (2015–2016) for comparison.

From: Perfluorooctanoic acid serum concentrations and half-lives in a community exposed to contaminated drinking water in New York State

 

Hoosick Falls

NHANES

  

PFOA mcg/L (ppb)

PFOA mcg/L (ppb)

 

N

GM (95% CI)

P50

P95

N

P50

P95

All participants

1573

42.1 (39.9, 44.4)

47.0

195

1993

1.57

4.17

By sex

 Males

699

44.5 (41.1, 48.2)

50.5

205

964

1.87

4.07

 Females

874

40.3 (37.5, 43.3)

44.8

188

1029

1.37

4.17

By age group

 <3

26

41.4 (27.6, 62.0)

41.6

b

c

c

c

 3–5

52

27.2 (20.8, 35.5)

33.0

b

d181

d1.80

d5.58

 6–11

120

26.4 (22.6, 30.8)

32.2

79

d458

d1.94

d3.84

 12–19

165

25.5 (22.8, 28.5)

27.6

71

353

1.27

2.47

 20–39

336

27.6 (24.7, 30.8)

30.9

150

549

1.47

3.57

 40–59

481

52.3 (47.7, 57.3)

62.0

199

555

1.67

3.87

 60+

393

70.1 (63.1, 78.0)

87.0

269

536

2.17

5.17

  1. Source: NYSDOH Biomonitoring program.
  2. GM Geometric mean, CI Confidence interval, P50 50th percentile, P95 95th percentile.
  3. aHoosick Falls samples collected February–November 2016.
  4. bHoosick Falls 95th percentiles are not provided when the N < 120, to protect the confidentiality of individual results.
  5. c NHANES does not include children under 3 years in PFAS testing.
  6. d NHANES reports children’s results for 3–5 and 6–11 years only for 2013–2014 survey years.
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