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Table 1 Baseline characteristics of all patients

From: Difficulty of predicting the presence of lymph node metastases in patients with clinical early stage gastric cancer: a case control study

Variable Preoperative (number, %) Postoperative (number, %)
Age (mean ± SD, range) (years) 58.0 ± 11.7 (26–87)
BMI (mean ± SD, range) (kg/m2) 23.6 ± 3.0 (15.1 − 35.4)  
Gender
 Male 625 (60.0)
 Female 417 (40.0)
Tumor size (mean ± SD, range) (mm)
 Size using EGD (n = 631) 16.1 ± 8.0 (2–60)
 Size using EUS (n = 479) 16.4 ± 5.9 (3–40)
 Pathological size 21.1 ± 14.8 (1–165)
Ulcer
 Positive 66 (6.3) 245 (23.5)
 Negative 976 (93.7) 797 (76.5)
Tumor location
 Upper third 146 (14.0) 127 (12.2)
 Middle or lower third 896 (86.0) 915 (87.8)
Gross type
 0-Ia 29 (2.8) 18 (1.7)
 0-IIa 278 (26.7) 34 (3.3)
 0-IIb 224 (21.5) 184 (17.7)
 0-IIc 428 (41.1) 667 (64.0)
 0-III 83 (8.0) 62 (6.0)
 AGC 0 77 (7.4)
Histology
 Papillary 1 (0.1) 1 (0.1)
 Well differentiated 165 (15.8) 125 (12.0)
 Moderately differentiated 260 (25.0) 264 (25.3)
 Poorly differentiated 252 (24.2) 273 (26.2)
 Signet ring cell 364 (34.9) 364 (34.9)
 Mucinous 0 2 (0.2)
 Carcinoma with lymphoid stroma 0 13 (1.2)
Tumor detectability in CT scan
 Detectable 210 (20.2)
 Undetectable 832 (79.8)
Presence of LMN in CT scan
 Suspected 42 (4.0)
 Unsuspected 1000 (96.0)
NLR 2.00 ± 1.32 (0.09 − 29.56)
Tumor depth
 Mucosa 588 (56.4)
 Submucosa 373 (36.0)
 Proper muscle 56 (5.4)
 Subserosa 10 (1.0)
 Serosa invasion 15 (1.4)
Lymph node classification
 pN0 968 (92.9)
 pN1 42 (4.0)
 pN2 23 (2.2)
 pN3a 7 (0.7)
 pN3b 2 (0.2)
Count of retrieved lymph nodes (mean ± SD, range) 32.6 ± 11.9 (5–74)
  1. SD standard deviation, BMI body-mass index, EGD esophagogastroduodenoscopy, EUS endoscopic ultrasonography, AGC advanced gastric cancer, LNM lymph node metastasis, CT computed tomography, NLR neutrophil-lymphocyte ratio