Table 5. Geometric mean and 95% confidence intervals of Pb, Hg, and Cd in whole blood by individual lifestyles in the study subjects over 20 years-old.

Variables		BPb, µg/dL			BHg, µg/L			BCd, µg/L
		Male	Female	Total	Male	Female	Total	Male	Female	Total
Smoking status
	Non-smokers	2.41 (2.29–2.54)	1.99 (1.95–2.03)	2.06 (2.02–2.10)	4.28 (3.96–4.62)	3.37 (3.25–3.49)	3.52 (3.41–3.64)	0.71 (0.66–0.76)	1.18 (1.14–1.22)	1.07 (1.04–1.11)
	Current- or ex-smokers	2.74 (2.67–2.81)	1.92 (1.76–2.09)	2.62 (2.55–2.69)	5.15 (4.91–5.40)	3.65 (3.22–4.13)	4.93 (4.71–5.15)	1.11 (1.07–1.16)	1.18 (1.04–1.34)	1.12 (1.08–1.16)
	P value	< 0.001	0.437	< 0.001	< 0.001	0.219	< 0.001	< 0.001	0.982	0.077
Alcoholic drinking status
	Non-drinkers	2.38 (2.22–2.55)	2.00 (1.93–2.07)	2.07 (2.01–2.14)	4.14 (3.68–4.67)	3.31 (3.12–3.51)	3.47 (3.29–3.66)	0.90 (0.82–0.99)	1.27 (1.22–1.33)	1.18 (1.13–1.24)
	Drinkers	2.69 (2.62–2.76)	1.97 (1.92–2.03)	2.31 (2.26–2.35)	5.01 (4.80–5.23)	3.43 (3.29–3.58)	4.16 (4.03–4.29)	0.99 (0.95–1.03)	1.13 (1.09–1.18)	1.06 (1.03–1.09)
	P value	< 0.001	0.599	< 0.001	0.004	0.309	< 0.001	0.072	< 0.001	< 0.001
Seafood intake during the last 3 days
	No	2.66 (2.56–2.77)	1.95 (1.87–2.02)	2.22 (2.16–2.29)	4.35 (4.09–4.63)	3.01 (2.84–3.18)	3.52 (3.37–3.68)	0.99 (0.93–1.05)	1.14 (1.08–1.20)	1.07 (1.03–1.11)
	Yes	2.64 (2.56–2.72)	2.00 (1.95–2.05)	2.26 (2.21–2.30)	5.23 (4.96–5.51)	3.64 (3.48–3.80)	4.26 (4.11–4.41)	0.98 (0.94–1.03)	1.21 (1.16–1.25)	1.10 (1.07–1.14)
	P value	0.719	0.220	0.438	< 0.001	< 0.001	< 0.001	0.839	0.071	0.244

BPb = lead in whole blood, BHg = mercury in whole blood, BCd = cadmium in whole blood.