並列タイトル等Nomogram for 5-year relapse-free survival of a patient with advanced gastric cancer after surgery
進行胃癌に対する根治切除術後の再発予後予測ノモグラムの検討
一般注記Background: Prognoses vary substantially among patients with advanced gastric cancer following curative surgery. The aim of the current study was to develop and verify the validity of a novel nomogram that predicts the probability of 5-year relapse-free survival (RFS) in patients who underwent curative resection for stage II/III gastric cancer. Materials and methods: A nomogram to predict 5-year RFS following surgical resection of gastric cancer was constructed based on the data of patients who underwent surgery for primary gastric carcinoma at three institutions in Japan in January 2001-December 2006. Multivariate analysis using a Cox proportional hazards regression model was performed, and the nomogram's predictive accuracy (discrimination) and the agreement between observed outcomes and predictions (calibration) were evaluated by internal validation. Results: Multivariate analyses revealed that age at operation, depth of tumor, tumor location, lymph node classification, and presence of combined resection were significant prognostic factors for RFS. In the internal validation, discrimination of the developed nomogram for 5-year RFS was superior to that of the American Joint Committee on Cancer TNM classification (concordance indices of 0.80 versus 0.67; P < 0.001). Moreover, calibration appeared to be accurate. Based on these results, we have created free software to more easily predict 5-year RFS. Conclusion: We developed and validated a nomogram to predict 5-year RFS after curative surgery for stage II/III gastric cancer. This tool will be useful for the assessing a patient's individual recurrence risk when considering additional therapy in clinical practice.
学位の種類: 博士（医学）. 報告番号: 甲第4396号. 学位記番号: 新大院博（医）甲第795号. 学位授与年月日: 平成30年3月23日
International Journal of Surgery. 2016. 35, 153-159.
新大院博（医）甲第795号
元資料の権利情報 : Elsevier
開始ページ : 153
終了ページ : 159
DOIinfo:doi/10.1016/j.ijsu.2016.09.080
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