Inclusion of iron status (iron deficiency defined as Ferritin <100 ng/mL or Ferritin <300 ng/mL associated with transferrin saturation <20%) in the adjusted model did not change the predictive value of the Hb/RDW ratio; it remained a strong predictor of survival as well as death or cardiovascular hospitalizations. This evidence concerns the gene GSTM1 and Iron deficiency anemia.