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Table 4 Poisson regression: excess risk of death between countries stratified by age and period of diagnosis

From: Do Asian breast cancer patients have poorer survival than their western counterparts? A comparison between Singapore and Stockholm

  1980 to 1989 1990 to 1999
  Hazard ratio 95% confidence interval P value Hazard ratio 95% confidence interval P value
Age ≤ 50 years       
   Countrya       
Stockholm 1.00 (Reference)   1.00 (Reference)  
Singapore 1.26 1.08 to 1.47 0.003 0.81 0.70 to 0.94 0.007
Age >50 years       
   Countrya       
Stockholm 1.00 (Reference)   1.00 (Reference)  
Singapore 1.48 1.29 to 1.69 <0.001 0.78 0.68 to 0.89 <0.001
  1. aAdjusted for year of follow-up and disease stage.