Identifying patients with undetected gastro-oesophageal cancer in primary care: External validation of QCancer® (Gastro-Oesophageal)

To evaluate the performance of QCancer® (Gastro-Oesophageal) for predicting the risk of undiagnosed gastro-oesophageal cancer in an independent UK cohort of patients from general practice records.Open cohort study to validate QCancer® (Gastro-Oesophageal) prediction model. Three hundred sixty-five practices from the United Kingdom contributing to The Health Improvement Network database. 2.1 million patients registered with a general practice...