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Table 2 Median maternal serum-PFAS concentrations (ng/ml) and (25th – 75th percentiles) according to respiratory health outcomes

From: Association between prenatal exposure to perfluoroalkyl substances and asthma in 5-year-old children in the Odense Child Cohort

Maternal serum-PFAS concentration (ng/ml) median (25th–75th percentile)WheezeSelf-reported AsthmaDoctor-diagnosed Asthma
 All
n = 981
Yes
n = 182
No
n = 799
Yes
n = 25
No
n = 956
Yes
n = 44
No
n = 937
PFOS7.73 (5.68–10.44)7.69 (5.85–10.86)7.73 (5.66–10.39)8.09 (6.90–10.86)7.72 (5.67–10.43)7.32 (5.39–9.01)7.73 (5.70–10.45)
PFOA1.68 (1.13–2.35)1.63 (1.17–2.30)1.69 (1.11–2.36)1.83 (1.37–2.59)1.68 (1.12–2.34)1.55 (1.09–1.97)1.69 (1.13–2.37)
PFHxS0.36 (0.24–0.50)0.36 (0.25–0.50)0.36 (0.24–0.50)0.37 (0.30–0.48)0.36 (0.24–0.50)0.34 (0.25–0.51)0.36 (0.24–0.50)
PFNA0.65 (0.49–0.86)0.66 (0.51–0.86)0.65 (0.49–0.86)0.75* (0.58–0.96)0.64* (0.49–0.86)0.61 (0.44–0.77)0.65 (0.49–0.87)
PFDA0.29 (0.22–0.40)0.30 (0.22–0.43)0.29 (0.22–0.40)0.35 (0.19–0.46)0.29 (0.22–0.40)0.29 (0.22–0.39)0.29 (0.22–0.40)
  1. * p < 0.05, using the Mann-Whitney test