There are multiple definitions:

1. waist to hip (circumference) ratio(English)

   • calculated by dividing waist circumference by hip circumference
   • BMI, BSA, SJL
   • Adiposity, Ratio-based metric, Risk factor, Metabolism
   • https://apps.wh…7962?sequence=1

2. watermark-to-host ratio(English)

   • WNR
   • Signal analysis
   • https://doi.org…ROC.2005.859599

3. white blood cell to hemoglobin ratio(English)

   • CRC, DFS, FAR, OS
   • Clinical chemistry, Ratio-based metric, Prognosis
   • https://doi.org…000000000037031