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Table 3 Factors association with the left gastric artery lymph node

From: Prognostic impact of lymph node metastasis along the left gastric artery in esophageal squamous cell carcinoma

  NO(n = 1265) YES(n = 256) χ2 / M-W U P value
Age (mean ± SD) 58.05 ± 9.12 57.53 ± 9.04 −0.584* 0.559
Gender    23.060# < 0.001
 Male 947 (74.86) 227 (88.67)   
 Female 318 (25.14) 29 (11.33)   
Smoking history    6.765# 0.009
 Yes 812 (64.19) 186 (72.66)   
 No 453 (35.81) 70 (27.34)   
Drinking history    11.539# 0.001
 Yes 418 (33.04) 113 (44.14)   
 No 847 (66.86) 143 (55.86)   
Differentiation    14.787# 0.001
 Well 334 (26.40) 54 (25.51)   
 Moderate 605 (47.83) 106 (46.75)   
 Poor/un- 326 (25.77) 96 (27.74)   
Vascular invasion    15.784# < 0.001
 Yes 19 (1.50) 14 (5.47)   
 No 1246 (98.50) 242 (94.53)   
Tumor location    60.143# < 0.001
 Upper thoracic esophagus 244 (19.29) 11 (4.30)   
 Middle thoracic esophagus 658 (52.01) 117 (45.70)   
 Lower thoracic esophagus 363 (28.70) 128 (50.00)   
Tumor length (mean ± SD) 3.70 ± 1.68 4.14 ± 1.71 −3.883* < 0.001
T stage    43.976# < 0.001
 Tis 30 (2.37) 0   
 T1 131 (10.36) 16 (6.25)   
 T2 313 (24.74) 36 (14.06)   
 T3 772 (61.03) 189 (73.83)   
 T4 19 (1.50) 15 (5.86)   
N stage    554.208# < 0.001
 0 923 (72.96) 0   
 1 232 (18.34) 108 (42.19)   
 2 93 (7.35) 106 (41.41)   
 3 17 (1.34) 42 (16.41)   
Number of resected TLNs (mean ± SD) 20.74 ± 13.89 22.19 ± 11.62 −3.155* 0.002
  1. Chi-Square and Mann-Whitney U test were used to explore the factors association with the left gastric artery lymph node (LN).
  2. #Chi-Square test for ESCC patients grouped with categorical variables, when the theoretical frequency is less than 1, the probability can only be calculated using the Fisher’s exact test
  3. *Mann-Whitney U test for ESCC patients grouped with continuous variables