Dependent Variable Anemia group 1 Anemia group 2 Mean Difference P-value EF IDA ferritin > 50 IDA ferritin < 50 2.5000 0.343    IDA ferritin > 50 chronic anemia 4.5732 0.022   IDA ferritin < 50 chronic anemia 2.0732 0.346 Hemoglobin IDA ferritin > 50 IDA ferritin < 50                   0.4944 0.102    IDA ferritin > 50 chronic anemia 0.6780 0.003   IDA ferritin < 50 chronic anemia 0.1836 0.463 MCV IDA ferritin > 50 IDA ferritin < 50 2.3222 0.119    IDA ferritin > 50 chronic anemia 3.2512 0.004   IDA Ferritin < 50 chronic anemia                   0.9290                     0.451 Platelet IDA ferritin > 50 IDA ferritin < 50 -7.2020 0.772    IDA ferritin > 50 chronic anemia -25.0909 0.184   IDA ferritin<50 chronic anemia -17,8889 0.380 IDA: iron deficiency anemia, IDA ferritin < 50 ng/ml: iron deficiency anemia with ferritin level less than 50, IDA ferritin > 50 ng/ml: iron deficiency anemia with ferritin level more than 50 ng/ml.

Table 4: Comparing ejection fraction (EF) and hemoglobin related parameters changes after treatment for anemia and heart failure. Iron deficiency anemia (IDA) patients were subdivided into two groups based on ferritin level. Data show a significant improvement in EF in patients with IDA with ferritin > 50 ng/ml compared to anemia of chronic disease, but improvement in EF in patients with IDA is independent of ferritin level.