Journal of Environmental and Public Health / 2016 / Article / Tab 1

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 1

Descriptive table for variables in analysis of lung cancer mortality risk for white males and white females in study counties with median groundwater arsenic level.

UnitsMeanMedianRange

Dependent variable
SMR (WM)0.90.89(0.42–1.37)
SMR (WF)0.880.89(0.39–1.65)

Independent variable
Median arsenicµg/L (ppb)6.64.5(3.0–59.0)
exposure

Covariables
EducationPercent < HS47.346.8(26.0–74.0)
RuralPercent of adults6867(5.0–100.0)
PovertyPercent < 75th percentile119(3.0–36.0)
IncomeMedian income ($)21,78921,088(11,151–37,669)
Soil/sedimentmg/Kg (ppm)7.726.95(1.23–30.95)
State born (M)Percent of Ca deaths5765(0.0–100.0)
State born (F)Percent of Ca deaths5868(0.0–100.0)
Current smoke (M)Percent of adults28.427.9(20.6–37.0)
Current smoke (F)Percent of adults23.322.8(15.0–34.4)

SMR: standardized mortality ratio, HS: high school, HHInc: household income, M: male, F: female, Ca: cancer; two outlier counties (Deer Lodge, MT; Storey, NV) were excluded.

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