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Table 1 Characteristics of the study population and PFAS serum concentrations

From: Associations between exposure to perfluoroalkyl substances and body fat evaluated by DXA and MRI in 109 adolescent boys

  n Median 25th-75th percentiles
Age (years) 109 12.6 11.5–13.2
Tanner stage 100   
 1 20   
 2 33   
 3 29   
 4 16   
 5 2   
SES 108   
 1 57   
 2 20   
 3 36   
 4 5   
 5 0   
Height (cm) 109 158.3 150.9–166.7
Height SDS 109 0.11 -0.65–0.87
Weight (kg) 109 44.9 38.6–51.5
Weight SDS 109 0.01 -0.73–0.75
BMI (kg/m2) 109 17.7 16.5–19.8
BMI SDS 109 0.30 -0.83–0.60
Body fat assessed by MRI (%)
 Abdominal fat 109 18.9 16.5–24.8
 Visceral fat 109 6.47 5.69–7.39
Body fat assessed by DXA (%)
 Total body fat 108 16.8 12.8–24.8
 Total body fat SDS 108 -0.08 -0.63–0.77
 Android fat 108 16.3 11.6–26.7
 Gynoid fat 108 26.7 22.2–35.8
 Android/gynoid ratio 108 0.6 0.51–0.78
PFAS serum concentrations (ng/mL)
 PFOA 109 2.79 2.18–3.58
 PFOS 109 6.81 5.85–9.47
 PFHxS 109 0.50 0.40–0.65
 PFNA 109 0.92 0.73–1.17
 PFDA 109 0.31 0.25–0.37
  1. BMI Body mass index, SDS Standard deviation score, PFAS Perfluoroalkyl substances, PFOA Perfluorooctanoic acid, PFOS Perfluorooctane sulfonic acid, PFHxS Perfluorohexane sulfonic acid, PFNA Perfluorononanoic acid, PFDA Perfluorodecanoic acid, SES Socioeconomic status