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Table 1 Patient clinicopathological characteristics

From: Laparoscopy-assisted versus open D2 radical gastrectomy for advanced gastric cancer without serosal invasion: a case control study

Characteristics LAG(n = 224) OG(n) = 112 P- value
Sex:    0.778
Female (n) 175 89  
Male (n) 49 23  
Age(years, mean ± SD) 61.6 ± 10.6 60.8 ± 10.2 0.525
Tumor size(cm, mean ± SD) 4.7 ± 2.0 4.4 ± 2.0 0.631
Body mass index (kg/m2) 22.3 22.0 0.498
Tumor location (n):    0.083
Greater curvature 82 52  
Lesser curvature 143 60  
Gross type (n):    0.450
Elevated 50 21  
Depressed 174 91  
Histology (n):    0.875
Differentiated 37 17  
Undifferentiated 187 95  
ASA score (n):    0.857
 1 122 58  
 2 94 49  
 3 8 5  
Comorbidities (n):    0.643
Presence of one or more comorbidities 102 54  
Hypertension 43 16  
Diabetes mellitus 17 10  
Dyslipidemia 19 12  
Cardiovascular 6 6  
Pulmonary 8 5  
Liver 5 3  
Others 4 2  
Tumor depth (n):    0.133
T2 81 50  
T3 143 62  
N stage (n):    0.681
N0 81 41  
N1 42 25  
N2 47 25  
N3 54 21  
TNM stage (n):    0.958
Ib 40 25  
IIa 56 26  
IIb 43 25  
IIIa 41 20  
IIIb 44 16  
Resection extent (n):    1.000
TG 106 61  
DG 118 51  
Reconstruction (n):    0.058
BillrothI 101 37  
BillrothII 16 14  
Roux-y 107 61  
  1. n, number of patients; ASA, American Society of Anesthesiologists; DG, distal gastrectomy; TG, total gastrectomy; TNM, tumor, node metastasis staging; LAG, laparoscopy-assisted gastrectomy; OG, open gastrectomy. P-values are for comparison of the LAG and OG groups.