There are multiple definitions:

1. negative predictive value(English)

   • NPV = TN / (FN+TN)
   • PPV, FN, FP, TN, TP
   • Statistics, Screening
   • https://doi.org…pubh.2017.00307

2. Nederlandse Patiënten Vereniging(Dutch)

   • NPCF
   • Patient-centered (interest group)
   • https://npvzorg.nl/

3. net present value(English)

   • refers to reproduction management programs
   • AB, AI
   • Veterinary medicine, Embryology /reproduction
   • https://doi.org…sci.2018.03.005