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:
“Heaven’s calculations don’t follow man’s calculations.”
—Chinese proverb.
“Nowhere are our calculations more frequently upset than in war.”
—Titus Livius (Livy)
“What, really, is wanted from a neighborhood? Convenience, certainly, an absence of major aggravation, to be sure. But perhaps most of all, ideally, what is wanted is a comfortable background, a breathing space of intermission between the intensities of private life and the calculations of public life.”
—Joseph Epstein (b. 1937)