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Table 2 Logistic regression analysis of risk factors for LNM in training cohort

From: A predictive nomogram for lymph node metastasis of incidental gallbladder cancer: a SEER population-based study

Variable Univariate snalysis   Multivariate analysis  
  Crude OR(95%CI) P value Ajusted OR(95%CI) P value
Age
  ≤ 60 1.00(reference)    
 >60 1.143 (0.777–1.682) 0.498   
Gender
 Male 1.00(reference)    
 Female 1.356 (0.922–1.995) 0.122   
Race
  White 1.00(reference)    
 Black 0.634 (0.364–1.106) 0.108   
 Others 0.793 (0.483–1.302) 0.359   
Histology
 Adenocarcinoma 1.00(reference)    
 Squamous cell carcinoma 0.379 (0.081–1.770) 0.217   
Grade
 Well differentiated 1.00(reference)   1.00(reference)  
 Moderately differentiated 1.775 (1.073–2.935) 0.025 1.260 (0.730–2.177) 0.407
 Poorly/un- differentiated 3.192 (1.876–5.431) < 0.001 2.110 (1.184–3.762) 0.011
T stage
 T1a 1.00(reference)   1.00(reference)  
 T1b 2.027 (0.410–10.017) 0.386 1.595 (0.316–8.058) 0.572
 T2 15.31 (3.648–64.255) < 0.001 11.104 (2.590–47.597) < 0.001
Tumor size
  ≤ 1 cm 1.00(reference)   1.00(reference)  
 >1 cm 4.536 (2.278–9.034) < 0.001 3.628 (1.770–7.437) < 0.001
  1. LNM lymph node metastasis; OR odds ratio; 95%CI 95% confidence interval