There are multiple definitions:

1. Wassermann reaction(English)

   • antibody test for syphilis
   • Transmissible disease
   • https://doi.org/10.2307/3410619

2. washout ratio / rate(English)

   • HMR, MIBG, CPET, HFpEF, HRR, H/M, LAVI, LVEF, LVMI
   • Medical imaging, Ratio-based metric
   • https://doi.org…2350-016-0724-8
   • http://dx.doi.o…ard.2015.10.224

3. wide resection(English)

   • despite having worse clinical disease, WR-RALP can be performed with minimal detriment to BCR-FS and urinary QoL
   • BCR-FS, NWR, QOL, RALP
   • Prostate, Oncology, Surgery
   • https://doi.org…onc.2014.07.003

4. win ratio(English)

   • a statistical method for analyzing clinical trial outcomes by comparing pairs of patients (treatment vs. control) based on a hierarchy of clinical importance. It ranks outcomes (e.g., mortality, then hospitalization) to prioritize severity, making it ideal for composite endpoints in cardiovascular and critical care medicine
   • CFB, HFE, NNT, NTB, QOL, WMW, WO
   • Statistics, Ratio-based metric, Prognosis, Quality and outcomes, Clinical trials
   • https://doi.org…06.2017.1397007
   • https://doi.org….1002/ejhf.3590
   • https://doi.org…jca.2026.03.019

5. wedge ratio(English)

   • OVF, WA
   • Spine (or spinal cord), Ratio-based metric, Orthopedics
   • https://doi.org…018-023-03758-w