Descriptive characteristics of the esophageal and gastric cancer cases and controls from Kaiser Permanente, Northern California, 1997–2011.

<p>Abbreviations: Charlson Comorbidity Index (CCI), gastroesophageal reflux disease (GERD), proton pump inhibitors (PPIs), H2-receptor antagonists (H2-RAs), hormone replacement therapy (HRT), non-steroidal anti-inflammatory drugs (NSAIDs), squamous cell carcinoma (SCC)</p><p>Descriptive characteristics of the esophageal and gastric cancer cases and controls from Kaiser Permanente, Northern California, 1997–2011.</p