Predictors
Incidence Rate Ratios (IRR) Lower 95% CI Upper 95% CI
p
Non-anaemia 0.97 0.88 1.08 0.59
Anaemia (correctly treated) 1.53 1.26 1.87 < 0.001
Site (Knee) 0.9 0.79 1.01 0.08
Age (65-75) 1.13 1.04 1.23 0.004
Age (>75) 1.45 1.33 1.59 < 0.001
Gender (Male) 0.91 0.85 0.98 0.011
Transfusion (Yes) 1.49 1.28 1.73 < 0.001
*Incorrectly treated anaemic patients were used as the control group *Incorrectly treated anaemic patients were used as the control group *Incorrectly treated anaemic patients were used as the control group *Incorrectly treated anaemic patients were used as the control group *Incorrectly treated anaemic patients were used as the control group