Table 1: Clinicopathological features of normal (BMI < 25 kg/m2), overweight (BMI 25–30 kg/m2), and obese (BMI ≥ 30 kg/m2) patients.

TotalGroup AGroup BGroup C value

Patient ()37821812139
BMI (median)24.0322.0527.0031.62<0.001
Age, y (median)6667.267630.111 (Kruskal)
Sex (male, female)223 : 155116 : 10284 : 3723 : 160.015 ()
Diabetes (yes, no)51 : 31923 : 19215 : 10113 : 26<0.001 ()
Missing8
pT0.945 ()
 1a422511.5%1310.7%410.3%
 1b30177.8%108.3%37.7%
 2532511.5%2319.0%512.8%
 3724420.2%2117.4%717.9%
 4a1629443.1%5041.3%1846.2%
 4b18125.5%43.3%25.1%
 Missing110.5%
pN0.132 ()
 01368137.2%4537.2%1025.6%
 139167.3%1512.4%820.5%
 2513516.1%129.9%410.3%
 3a723516.1%2823.1%923.1%
 3b784922.5%2117.4%820.5%
 Missing220.9%
Tumor site0.514 ()
 Upper third532812.8%1714.0%820.5%
 Middle third1045726.1%3932.2%820.5%
 Lower third19311351.8%5948.8%2153.8%
 Diffuse16104.6%54.1%12.6%
 Gastric stump1094.1%012.6%
 Missing210.5%10.8%0
Lauren0.318 ()
 Diffuse1046529.8%2419.8%1538.5%
 Intestinal22712657.8%8267.8%1948.7%
 Mixed35209.2%119.1%410.3%
 Missing1273.2%43.3%12.6%
Morbidity0.803 ()
 Yes1146328.9%3831.4%1333.3%
 No26415571.1%8368.6%2666.7%
Major morbidity0.696 ()
 Yes874721.6%3125.6%923.1%
 No29117178.4%9074.4%3076.9%
Postoperative death0.263 ()
 Yes14115.0%21.7%12.6%
 No36420795.0%11998.3%3897.4%
Hospital stay, days: median111212110.356 (Kruskal)
Examined lymph nodes (median)353733350.059 (Kruskal)
Metastatic lymph nodes (median)44350.586 (Kruskal)