Table 1.

The geometric mean of blood cadmium concentrations in a nonoccupational exposed population.

Characteristics	n	Blood cadmium concentration (μg/L)
		GM ± SE	95% CI
Total	370	0.46 ± 0.02	0.43–0.49
Gender
male	267	0.46 ± 0.02	0.42–0.50
female	103	0.45 ± 0.03	0.40–0.50
Age (yrs)
45–55 yrs	144	0.45 ± 0.03	0.40–0.51
>55 yrs	226	0.46 ± 0.02	0.42–0.50
Smoking habit
nonsmoker	294	0.41 ± 0.02^a	0.38–0.42
Smoker	76	0.72 ± 0.04	0.62–0.85
Alcohol consumption
Nondrinker	178	0.44 ± 0.02	0.40–0.48
Drinker	192	0.47 ± 0.02	0.43–0.53

^a Significantly different from smoker, P < 0.05 Student's t-test.

GM = Geometric mean.

95% CI = 95% Confidence interval.