NCI Missouri Case Control Study
538 Cases, 1183 Controls (all women).
All Never Smokers or Long-Term Ex-Smokers.
Average Radon Concentration= 1.6 pCi/L. (6.7% ɰpCi/L).
Over 63% cases deceased, next-of-kin interviews.
Power of study: 80% chance of detecting a 40-55% increase.
No radon/lung cancer association seen in total data.
Statistically significant positive associations seen for cases with "in person" interviews and adenocarcinoma.