Cancer / Logistic Regression / Humans / Northern Ireland / Female / Male / Population Control / Risk factors / Aspirin / Aged / Middle Aged / Esophagus / Risk Factors / Acetaminophen / Observational Study / Case Control Study / Confidence Interval / Adenocarcinoma / Case Control Studies / Male / Population Control / Risk factors / Aspirin / Aged / Middle Aged / Esophagus / Risk Factors / Acetaminophen / Observational Study / Case Control Study / Confidence Interval / Adenocarcinoma / Case Control Studies