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Table 4 Cox proportional hazards model on prognostic factors for patients undergoing gastrectomy with D1/D1+ or D2 lymphadenectomy

From: A comparison of the operative outcomes of D1 and D2 gastrectomy performed at a single Western center with multiple surgeons: a retrospective analysis with propensity score matching

   Univariable Cox regression analysis Multivariable Cox regression analysis
Parameters   HR 95%CI p HR 95%CI p
Before PSM
 Age ≥ 70/< 70 1.172 0.721–1.907 0.521    
 Gender F/M 1.045 0.622–1.756 0.867    
 BMI < 30/≥30 1.138 0.673–1.924 0.629    
 Hemoglobin level ≤ 100/> 100 1.682 0.854–3.314 0.133    
 Tumor location Proximal, middle/Distal 1.608 0.948–2.728 0.078    
 TNM stage (AJCC classification) III, IV/ I, II 3.925 2.402–6.414 0.000* 3.519 2.067–5.993 0.000*
 Chemotherapy Yes/No 1.205 0.740–1.963 0.453    
 Lymphadenectomy type D1/D1+/D2 1.338 0.787–2.272 0.282    
 Gastrectomy type Total/Partial 1.803 1.102–2.949 0.019*    
aOverall complication Yes/No 3.169 1.895–5.298 0.000* 2.971 1.714–5.149 0.000*
After PSM
 Age ≥ 70/< 70 1.666 0.714–3.881 0.237    
 Gender M/F 1.069 0.416–2.744 0.890    
 BMI < 30/≥ 30 3.463 0.808–14.840 0.094    
 Hemoglobin level ≤ 100/> 100 1.596 0.542–4.701 0.396    
 Tumor location Proximal, middle/Distal 1.305 0.572–2.981 0.527    
 TNM stage (AJCC classification) III, IV/ I, II 6.627 2.640–16.638 0.000* 4.218 1.560–11.407 0.005*
 Chemotherapy Yes/No 1.318 0.573–3.034 0.516    
 Lymphadenectomy type D1/D1+/D2 3.490 1.308–9.311 0.013* 4.353 1.511–12.541 0.006*
 Gastrectomy type Total/Partial 2.577 1.074–6.184 0.034* 2.883 0.846–9.829 0.091
aOverall complication Yes/No 4.480 1.901–10.560 0.001* 3.849 1.342–11.040 0.012*
  1. *p < 0.05
  2. aOverall complication is defined as Clavien-Dindo ≥ grade II