Table 4.

Median serum levels of PFHxS in control group and GCT group in this study

Variables			PFHxS (ng/ml)
			Control	P value	GCTs	P value
Sex	Male		0.33 (0.24–0.48)	0.714	1.37 (0.64–2.21)	0.120
	Female		0.34 (0.24–0.56)		1.83 (1.71–2.76)
Mother Age in Birth	<30 years old		0.33 (0.19–0.42)	0.228	1.76 (0.98–2.42)	0.965
	≥30 years old		0.34 (0.25–0.57)		1.81 (0.70–2.75)
Father Age in Birth	<30 years old		0.34 (0.28–0.47)	1.000	1.72 (0.76–2.38)	0.468
	≥30 years old		0.34 (0.23–0.55)		1.84 (1.26–2.75)
Emergency Contraceptive Usage		No	0.40 (0.30–0.51)	0.582	1.27 (0.62–2.90)	0.500
		Yes	0.34 (0.23–0.57)		1.81 (1.26–2.38)
Infectious Disease during Pregnancy		No	0.26 (0.22–0.40)	0.335	1.81 (1.27–2.76)	0.379
		Yes	0.34 (0.24–0.56)		1.72 (0.70–2.38)
Hair Dye Usage during Pregnancy		No	0.32 (0.19–0.46)	0.020	1.37 (0.63–1.95)	0.010
		Yes	0.49 (0.34–0.67)		2.38 (1.72–3.29)
Cosmetics Usage during Pregnancy		No	0.34 (0.23–0.46)	0.763	1.46 (0.88–2.01)	0.332
		Yes	0.34 (0.24–0.55)		1.83 (1.26–2.46)
Barbecue during Pregnancy		No	0.32 (0.19–0.46)	0.004	1.42 (0.61–1.79)	0.007
		Yes	0.58 (0.34–1.21)		2.19 (1.27–3.03)
Filtered Water Drinking during Pregnancy		No	0.34 (0.23–0.49)	0.950	1.84 (1.76–2.63)	0.191
		Yes	0.34 (0.25–0.55)		1.70 (0.66–2.38)
Indoor-decorating during Pregnancy		No	0.34 (0.23–0.49)	0.249	1.78 (0.88–2.38)	0.530
		Yes	0.53 (0.30–1.03)		1.84 (1.26–2.46)
Living near Possible Pollution Sources
Farmland		No	0.29 (0.16–0.42)	0.455	1.93 (1.27–3.38)	0.440
		Yes	0.34 (0.24–0.56)		1.76 (0.70–2.38)

Concentrations=median (interquartile range). GCT=Germ cell tumor.