Federal EPA and state government agencies have been reporting observational data at the US County level since about 1980. The data given here include 5 potential X-confounder variables of the relationship between lung cancer mortality and radon exposure; they were amassed and checked by Goran Krstic, Fraser Health Authority, Vancouver, BC, Canada.
data(radon)A data frame of 11 variables for 2881 US counties. One Missing Value; row 778 for Shannon County, SD, fips == 46113, has hhincome == NA.
County FIPS code. Codes are 4 or 5 digit integers; 2881 unique values.
State Factor variable (2-character codes); 46 unique levels.
County or Parish Factor variable (character codes); 1703 unique levels.
Lung Cancer Mortality rate (deaths per 100,000 person-years), 1980-2004.
County Radon Exposure level in picocuries per liter (pCi/L), 1986-1992. Rounded to 1 decimal place.
Natural logarithm of County Radon Exposure level. Radon levels reported as 0.0 for 10 US counties are Windsorized here to ln(0.05), which is roughly -3.
Percentage of County Residents considered Obese (age adjusted), 2008.
Percentage of County Residents of Age 65 and over, 2000 Census.
Percentage of County Residents who Currently Smoke, 1997-2003.
Percentage of County Residents who Ever Smoked, 1997-2003.
Average Median HouseHold Income in Thousands ($1,000), 1989-2004.
Krstic G, Obenchain RL. (2016) Radon dataset documentation and downloads. http://localcontrolstatistics.org
Obenchain RL. (2018) RADON_short.pdf http://localcontrolstatistics.org 40 PPT Slides and Commentary in Notes Pages format.
# NOT RUN {
data(radon)
str(radon)
# }
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