Table 4 Odds ratios (ORs) for hepatocellular carcinoma (HCC) according to distribution tertiles of polychlorinated biphenyls (PCBs) in the controls.

From: Polychlorinated biphenyls and risk of hepatocellular carcinoma in the population living in a highly polluted area in Italy

Lipid adjusted PCB concentration in serum (ng/g lipid )

Cases

Controls

OR (95% CI)*

PCB 118:

   

T1 (0–11)

22

38

1

T2 (12–21)

10

32

0.90 (0.26–3.15)

T3 (22–241)

30

32

2.45 (0.85–7.07)

PCB 138:

   

T1 (14–67)

21

34

1

T2 (68–106)

13

34

1.44 (0.44–4.74)

T3 (107–511)

28

34

2.42 (0.79–7.38)

PCB 153:

   

T1 (23–121)

21

34

1

T2 (130–196)

12

34

1.31 (0.39–4.36)

T3 (206–691)

29

34

2.40 (0.79–7.31)

PCB 156:

   

T1 (0–15)

28

35

1

T2 (16–24)

7

35

0.29 (0.08–1.00)

T3 (25–74)

27

32

1.10 (0.37–3.23)

PCB170:

   

T1 (0–46)

23

34

1

T2 (47–71)

15

34

0.78 (0.25–2.47)

T3 (72–209)

24

34

1.61 (0.56–4.64)

PCB 180:

   

T1 (34–163)

21

34

1

T2 (166–257)

15

35

1.05 (0.32–3.48)

T3 (261–810)

26

33

1.69 (0.57–4.99)

PCB 194:

   

T1 (0–37)

16

35

1

T2 (39–63)

19

34

1.81 (0.55–5.99)

T3 (65–231)

27

33

4.75 (1.40–16.04)

Total PCBs:

   

T1 (92–556)

24

34

1

T2 (569–908)

10

34

0.61 (0.18–2.07)

T3 (912–3089)

28

34

1.76 (0.62–5.03)

  1. *Adjusted for age, sex, residence, education and presence of one or more risk factors for HCC by logistic regression analysis.