. Author manuscript; available in PMC: 2020 Feb 15.

Published in final edited form as: Sci Total Environ. 2018 Oct 11;651(Pt 2):2292–2303. doi: 10.1016/j.scitotenv.2018.10.123

Table 3.

Examination of statistically significant predictors of serum concentration of sum PCBs. Results of bivariate analyses.

	Sum PCBs	N	Mean Rank	p
Age		592	-	<0.001
Gender	Male	290	318.06	0.003
Gender	Female	302	275.79	0.003
Education	Primary school and high school without GCSE	212	311.00	0.022
	High school with GCSE	263	299.60
	University	115	257.57
Smoking more than 3 months in life	no	317	277.03	0.003
Smoking more than 3 months in life	yes	275	318.95	0.003