Gamma distribution and house 222Rn measurements.
The statistical distribution of 222Rn measurements from basements and first floors of homes in northeastern Pennsylvania was investigated. The gamma distribution was statistically significantly superior to the normal distribution (p less than 0.005) in describing the frequency distribution of the logarithm of observed 222Rn levels. The fit to the data was closer both in the central portion and in the upper tail. The gamma distribution has certain characteristics that make it generally useful in the study of environmental toxic agents where several different exposures over a lifetime occur and must be combined, as for risk assessment or for statistical power calculations for epidemiologic studies.
Janssen
I
I
Environmental Research Division, Argonne National Laboratory, IL 60439.
Stebbings
J H
JH
D016902:Air Pollution, Indoor / Q000032:analysis*; D000398:Air Pollution, Radioactive / Q000032:analysis*; D006798:Housing; D010414:Pennsylvania; D011886:Radon / Q000032:analysis*; D013223:Statistics as Topic
D011886:Radon