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Table 2 Cox proportional hazard model based on the uni- and multivariate analyses to determine the independent factors for the overall survival (OS). For the univariate analysis, we selected tubular adenocarcinoma, gastric resection, and postoperative chemotherapy as independent factors affecting the OS. Similarly, for the multivariate analysis, we selected volume reduction and postoperative chemotherapy as independent factors associated with OS

From: The impact and optimal indication of non-curative gastric resection for stage IV advanced gastric cancer diagnosed during surgery: 10 years of experience at a single institute

Univariate analysis Hazard ratio 95 % CI p value
 Male 0.976 0.518–1.944 0.941
 Age ≥ 68 1.070 0.584–1.954 0.825
 PS ≥ 2 2.329 0.990–4.881 0.053
 ASA-PS ≥ 2 1.156 0.623–2.179 0.648
 Tubular adenocarcinoma 0.483 0.231–0.935 0.030
 P(+) and/or CY (+) 0.886 0.448–1.913 0.744
 LN(+) or H(+) 0.970 0.476–1.851 0.928
 Non-curative gastric resection 0.326 0.172–0.614 <0.01
 Complications (Clavian-Dindo ≥ 2) 1.820 0.832–3.679 0.127
 Postoperative chemotherapy 0.260 0.120–0.626 0.004
Multivariate analysis Hazard ratio 95 % CI p value
 Tubular adenocarcinoma 0.531 0.233–1.130 0.102
 Non-curative gastric resection 0.309 0.152–0.615 <0.01
 Postoperative chemotherapy 0.136 0.056–0.353 <0.01
  1. PS performance status, ASA-PS ASA physical status