Indoor radon and lung cancer: a case-control study

Area of Science:

• Environmental Health
• Epidemiology
• Oncology

Background:

• Indoor radon exposure is a known risk factor for lung cancer in miners.
• The association between residential radon levels and lung cancer in the general population remains debated.
• Radon decay products are established carcinogens.

Purpose of the Study:

• To investigate the association between indoor radon concentrations and lung cancer risk in a general population.
• To compare residential radon exposure levels in lung cancer patients versus a control group.
• To estimate lung cancer rates based on indoor radon levels.

Main Methods:

• A case-control study comparing lung cancer patients (case group) with a control group.
• Distribution analysis of homes with high indoor radon levels against a log-normal distribution.
• Calculation of relative frequencies and correlation coefficients between radon levels and lung cancer.
• Statistical comparison of mean radon concentrations between case and control groups.

Main Results:

• The control group's home radon level distribution followed a log-normal pattern.
• A positive correlation was found between relative frequencies and indoor radon concentrations.
• Lung cancer patients resided in homes with significantly higher mean radon concentrations than the control group.
• The study enabled estimation of lung cancer rates for specific indoor radon concentrations.

Conclusions:

• Indoor radon exposure is significantly associated with lung cancer risk in the general population.
• Residential radon levels in Osijek were found to be a significant factor for lung cancer incidence.
• The findings support public health measures to mitigate indoor radon exposure.