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Table 3 Multivariate analysis of OS with the Cox proportional hazards model

From: ABO blood group is a predictor of survival in patients with laryngeal cancer

Variable Hazard ratio 95% CI P
Alcohol consumption 1.218 1.009–1.470 0.040
Tumor differentiation 1.201 1.057–1.365 0.005
Primary site 0.889 0.738–1.071 0.215
T category 1.334 1.213–1.468 <0.001
ABO blood group 1.101 1.023–1.184 0.010
Sex 0.425 0.175–1.034 0.059
Age 1.877 1.558–2.260 <0.001
Smoking index 1.122 0.934–1.349 0.220
N category 2.203 1.749–2.774 <0.001
  1. CI confidence interval