Electronic clinical decision support tool for assessing stomach symptoms in primary care (ECASS): a feasibility study.

Objective: To determine the feasibility of a definitive trial in primary care of electronic clinical decision support (eCDS) for possible oesophago-gastric (O-G) cancer.

Design And Setting: Feasibility study in 42 general practices in two regions of England, cluster randomised controlled trial design without blinding, nested qualitative and health economic evaluation.

Participants: Patients aged 55 years or older, presenting to their general practitioner (GP) with symptoms associated with O-G cancer.