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Table 2 Mortality due to infection during 2004–2015 before and after PS matching

From: History of anemia and long-term mortality due to infection: a cohort study with 12 years follow-up in South Korea

Variable Infectious mortality (n, %) Cox regression P-value
HR (95% CI)
Before PS matching
 Non-anemic group 2008/463,863 (0.4) 1  
 Anemia group 437/49,042 (0.9) 2.14 (1.93, 2.37) < 0.001
After PS matching
 Non-anemic group 256/49,039 (0.5) 1  
 Anemia group 437/49,039 (0.9) 1.77 (1.52, 2.06) < 0.001
  1. PS, propensity score; HR, hazard ratio; CI, confidence interval