Calculations
The "width" in RDW is sometimes thought of as "misleading," since it in fact is a measure of deviation of the volume of RBCs, and not directly the diameter. However, "width" refers to the width of the volume curve (distribution width), not the width of the cells. Thus, it is a reasonably accurate term.
Mathematically the RDW is calculated with the following formula:
- RDW = (Standard deviation of MCV ÷ mean MCV) × 100.
Read more about this topic: Red Blood Cell Distribution Width
Famous quotes containing the word calculations:
“He who is conversant with the supernal powers will not worship these inferior deities of the wind, waves, tide, and sunshine. But we would not disparage the importance of such calculations as we have described. They are truths in physics because they are true in ethics.”
—Henry David Thoreau (1817–1862)
“Heaven’s calculations don’t follow man’s calculations.”
—Chinese proverb.
“Nowhere are our calculations more frequently upset than in war.”
—Titus Livius (Livy)