Journal of Environmental and Public Health / 2016 / Article / Tab 2

Research Article

Arsenic in Drinking Water and Lung Cancer Mortality in the United States: An Analysis Based on US Counties and 30 Years of Observation (1950–1979)

Table 2

Stratified analysis of male and female lung cancer mortality by median groundwater arsenic level (µg/L).

As MedianCounty Wt MalesCounties MalesCases MalesSMR
Males
95% CI
Males
RR
Males
County Wt FemalesCounties FemalesCases FemalesSMR
Females
95% CI
Females
RR
Females

3.03.04912,5950.89(0.84–0.94)1.003.0423,0260.89(0.81–0.96)1.00
3.1–3.93.5151,9470.91(0.82–0.99)1.023.5134550.90(0.77–1.03)1.02
4.0–4.94.12511,1990.88(0.82–0.94)0.974.1212,9070.89(0.81–0.96)0.99
5.0–5.95.0181,2510.92(0.81–1.04)1.055.0112350.87(0.73–1.02)0.98
6.0–6.96.1161,3170.91(0.79–1.02)0.986.1112510.93(0.82–1.05)1.07
7.0–7.97.1113690.86(0.70–1.01)0.947.26611.05(0.80–1.30)1.13
8.0–9.98.3151,4130.94(0.85–1.03)1.108.4102230.75(0.58–0.92)0.71
10.0–14.911.2121,9520.84(0.73–0.94)0.8911.3103850.87(0.72–1.02)1.16
15.0–24.920.178680.95(0.78–1.12)1.1320.451700.84(0.57–1.10)0.97
25.0–59.939.731230.83(0.53–1.13)0.8841.23310.82(0.67–0.97)0.98

3.03.04912,5950.89(0.84–0.94)1.003.0493,0260.877(0.81–0.96)1.00
3.1–9.95.410017,4960.90(0.82–0.99)1.015.3724,1320.890(0.84–0.94)1.01
10.0–59.917.9222,9430.87(0.82–0.94)0.9818.8185860.853(0.76–0.95)0.97

County Wt: county weighted, SMR: standardized mortality ratio, CI: confidence interval, RR: relative risk.

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