Final answer:
On average, a 1% increase in hematocrit can be observed in the first month of iron replacement therapy.
Step-by-step explanation:
The hematocrit is a measure of the volume of red blood cells in a given volume of blood. It is expressed as a percentage. In iron replacement therapy, the goal is to increase the production of red blood cells, which would lead to an increase in hematocrit. The amount of increase in hematocrit can vary depending on factors like the severity of anemia and the individual's response to treatment. However, on average, a 1% increase in hematocrit can be observed in the first month of iron replacement therapy.