The RDW to platelet count ratio (RPR) can help identify a patient with chronic hepatitis B virus with significant hepatic fibrosis.
Patient selection: chronic HPV
Parameters:
(1) red cell distribution width in percent
(2) platelet count in 10^9/L
RPR =
= (RDW) / (platelet count)
Ratio
Hepatic Fibrosis (Tu et al)
> 0.065
F2 to F4
> 0.115
F3 or F4
> 0.135
F4 (cirrhosis)
Performance:
• According to Karagoz et al, the area under the ROC curve is 0.76.
• According to Chen et al, the area under the ROC curve for cirrhosis is 0.88.
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Specialty: Gastroenterology