Oba K, Morita S, Rahman M, Sakamoto J. Factors associated with compliance and non-compliance by physicians in a large-scale randomized clinical trial. Trials 2006; 7:26.
Oba K, Morita S, Tsuburaya A, Kodera Y, Kobayashi M, Sakamoto J. Efficacy of Adjuvant Chemotherapy Using Oral Fluorinated Pyrimidines for Curatively Resected Gastric Cancer: A Meta-Analysis of Centrally Randomized Controlled Clinical Trials in Japan. J Chemother 2006; 18: 311-7.
Sakamoto J, Morita S, Oba K, Matsui T, Kobayashi M, Nakazato H, Ohashi Y; Meta-Analysis Group of the Japanese Society for Cancer of the Colon Rectum. Efficacy of adjuvant immunochemotherapy with polysaccharide K for patients with curatively resected colorectal cancer: a meta-analysis of centrally randomized controlled clinical trials. Cancer Immunol Immunother 2006; 55: 404-11.
Sakamoto J, Oba K, Matsui T, Kobayashi M. Efficacy of Oral Anti-Cancer Agents for Colorectal Cancer. Dis Colon Rectum 2006; 49 Suppl 1: S82-91.
Morita S, Kobayashi M, Oba K, Ichihara T, Nakao A, Sakamoto J. Truth-telling to Patients with Advanced Cancer: A Comparison between Cancer center, University Hospitals, General City Hospitals, and Private General Practitioners in Japan. Ann Cancer Res Therap 2006; 14: 1-11.
Doi K, Matsuyama Y, and Ohashi Y. Analysis of quality of life data with death and drop-out in advanced non-small-cell lung cancer patients. Japanese Journal of Biometrics 2006; 27(1): 17-33.
Sakamoto K, Matsuyama Y, and Ohashi Y. Sensitivity analysis of publication bias in meta-analysis: A Bayesian approach. Japanese Journal of Biometrics 2006; 27(2): 109-119.