Table 3

Determinants of serum PFAS concentrations in never-pregnant women aged 18–39 years by multiple linear regression, n=158

Variables included in the model	PFOA		PFNA		PFDA		PFUnDA		Lin PFHpS		Sum PFHpS
Variables included in the model	Beta*	P value	Beta*	P value	Beta*	P value	Beta*	P value	Beta*	P value	Beta*	P value
Age†	0.09	0.27	0.22	0.005	0.16	0.05	0.25	0.001	0.18	0.03	0.18	0.02
Fish consumption‡	0.04	0.59	0.27	<0.001	0.33	<0.001	0.47	<0.001	0.19	0.02	0.18	0.02
BMI	−0.11	0.19	−0.10	0.22	−0.12	0.13	−0.14	0.05	0.01	0.88	0.01	0.92

Variables included in the model	Sum PFHxS		Lin PFOS		Sum PFOS		Sum PFCA		SumPFSA		Sum PFAS
Variables included in the model	Beta*	P value	Beta*	P value	Beta*	P value	Beta*	P value	Beta*	P value	Beta*	P value
Age†	−0.08	0.37	0.30	<0.001	0.30	<0.001	0.16	0.05	0.21	0.01	0.22	0.006
Fish consumption‡	−0.10	0.24	0.36	<0.001	0.28	<0.001	0.19	0.02	0.18	0.02	0.20	0.009
BMI	−0.09	0.25	−0.04	0.59	−0.04	0.64	−0.14	0.09	−0.08	0.32	−0.10	0.19

*Beta refers to the standardised beta.
†Age in years.
‡Fish consumption categorised; Fish for dinner: Never (20%),<1 times/month (4%), 1–3 times/month (22%), 1–2 times/week (43%) and 3–5 times/week (12%).
BMI, body mass index; PFAS, perfluoroalkyl substance; PFCA, perfluorocarboxylic acids; PFDA, perfluorodecanoate; PFHpS, perfluoroheptane sulfonate; PFHxS, perfluorohexane sulfonate; PFNA, perfluorononanoate; PFOA, perfluorooctanoic acid; PFOS, perfluorooctanesulfonic acid; PFSA, perfluorosulfonic acids; PFUnDA, perfluoroundecanoate.