A nomogram for predicting individual survival of patients with gastric cancer who underwent radical surgery with extended lymph node dissection
- 29 May 2013
- journal article
- research article
- Published by Springer Science and Business Media LLC in Gastric Cancer
- Vol. 17 (2), 287-293
- https://doi.org/10.1007/s10120-013-0270-x
Abstract
We developed and validated a nomogram for use at a high-volume center where radical surgery with extended lymph node dissection is the standard treatment for gastric cancer. Overall, 1,614 patients were randomly divided into the test set (n = 805) and validation set (n = 809). The scoring system was calculated using a Cox proportional hazard regression model with the survival of gastric cancer as the predicted endpoint. The concordance index (c-index) was used as an accuracy measure, with bootstrapping to correct for optimistic bias. Calibration plots were constructed. Based on a Cox model, we developed a nomogram that predicts the probability of 3- and 5-year survival from the time of surgery. The bootstrap-corrected c-indices were 0.87 and 0.84 in the test and validation sets, respectively. Survival was well predicted in both sets. The predictions of our nomogram discriminated better than the AJCC staging system (test set: c-index, 0.87 vs. 0.77; P < 0.0001; validation set: c-index, 0.84 vs. 0.79; P < 0.001). We developed and validated a nomogram that provided a significantly accurate prediction of postoperative survival in Korean patients with gastric cancer who underwent radical gastrectomy with extended lymph node dissection.Keywords
This publication has 19 references indexed in Scilit:
- Long‐term outcomes and survival after laparoscopy‐assisted distal gastrectomy for gastric cancer: Three‐year survival analysis of a single‐center experience in KoreaJournal of Surgical Oncology, 2011
- Trastuzumab in combination with chemotherapy versus chemotherapy alone for treatment of HER2-positive advanced gastric or gastro-oesophageal junction cancer (ToGA): a phase 3, open-label, randomised controlled trialThe Lancet, 2010
- Adenocarcinoma of the esophagogastric junction: incidence, characteristics, and treatment strategiesGastric Cancer, 2010
- Comparison of Gastric Cancer Survival Following R0 Resection in the United States and Korea Using an Internationally Validated NomogramAnnals of Surgery, 2010
- Method for evaluating prediction models that apply the results of randomized trials to individual patientsTrials, 2007
- Predicting Individual Survival After Gastric Cancer ResectionAnnals of Surgery, 2006
- Prediction of Recurrence After Radical Surgery for Gastric CancerAnnals of Surgery, 2005
- Postoperative Nomogram for Disease-Specific Survival After an R0 Resection for Gastric CarcinomaJournal of Clinical Oncology, 2003
- Postoperative Nomogram for 12-Year Sarcoma-Specific DeathJournal of Clinical Oncology, 2002
- Chemoradiotherapy after Surgery Compared with Surgery Alone for Adenocarcinoma of the Stomach or Gastroesophageal JunctionNew England Journal of Medicine, 2001