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Table 3 Risk factors for lymph node metastasis in deveriation cohort

From: A nomogram to predict lymph node metastasis risk for early esophageal squamous cell carcinoma

Variables LNM P value Logistic regression analysis P value
Negative (%) Positive (%) OR 95%CI
Sex    0.411
 Male 156 (82.5) 33 (17.5)     
 Female 30 (88.2) 4 (11.8)     
Age    0.418
 <  60 years 92 (81.4) 21 (18.6)     
 > = 60 years 94 (85.5) 16 (14.5)     
Tumor location    0.475
 Upper 12 (92.3) 1 (7.7)     
 Middle 96 (85.7) 16 (14.3)     
 Lower 77 (80.2) 19 (19.8)     
Tumor number    0.075
Single 170 (85.0) 30 (15.0)     
Mutifocal 16 (72.7) 6 (27.3)     
Tumor size    0.029 2.420 1.070–5.473 0.034
 <  2.5 cm 121 (87.7) 17 (12.3)     
 > = 2.5 cm 65 (76.5) 20 (23.5)     
Differentiation    0.001 3.766 1.515–9.360 0.004
 High-middle 164 (87.2) 24 (12.8)     
 Low 22 (62.9) 13 (37.1)     
Depth of invasion    0.005 3.124 1.146–8.511 0.026
 T1a 76 (92.7) 6 (7.3)     
 T1b 111 (78.7) 30 (21.3)     
Lymphovascular invasion    0.001
 Not reported 178 (86.0) 29 (14.0)     
 Reported 8 (50.0) 8 (50.0)