Capecitabine or Observation for Patients With pT1N+M0 or pT2-3N0M0 Gastric Adenocarcinoma Undergoing R0 Resection

Capecitabine is administered within 6 weeks after resection and after adequate recovery. To reduce the side effects and improve patient compliance, the administered dose is half of the recommendation: 625 mg/m2, bis in die (BID) (1250 mg/m2 per day). A 2-week therapy is followed by a 1-week pause, and a cycle includes 3 weeks. A total of 8 cycles is planned for each patient.