There are multiple definitions:

1. standardized incidence ratio(English)

   • Standards, Statistics

2. Society of Interventional Radiology(English)

   • BSIR
   • Radiology

3. signal-to-interference ratio(English)

   • Bioengineering, Signal analysis, Ratio-based metric

4. Susceptible-Infected-Removed(English)

   • a model used in epidemiology
   • Model(ing), Epidemiology, Infection

5. structural incomplete response(English)

   • ATA, DTC, IDR, RAI, TRI, ER
   • Quality and outcomes
   • https://doi.org…47/CMAR.S314621

6. systemic inflammatory response(English)

   • has a role in predicting outcomes in patients with operable cancer
   • GPS, LMR, mGPS, NLR, PLR
   • Oncology, Quality and outcomes
   • https://doi.org…598-017-16955-5

7. Speech Intelligibility Rate(English)

   • test developed for use in clinical comparisons of hearing aid conditions
   • SBR
   • Audiology
   • https://doi.org…4/jshr.3202.347

8. statistical image reconstruction(English)

   • CNN, DL, FBP, FDK, ML, MBIR, NUFFT, PET, MRI, PWLS, SPECT, SDL
   • Medical imaging, Statistics
   • https://doi.org…OC.2019.2936204

9. [prognostic] score index for radiosurgery(English)

   • EGFR, EORTC, EWB, FACT-BR, FACT-G, FWB, GKS, KPS, LC, MLM, NSCLC, PWB, QOL, RPA, RTOG, SCLC, SRS, SWB, TOI, WBRT, BM, BRCS, DS-GPA
   • Surgery, Prognosis, Scoring systems/scales
   • https://doi.org…017.2.JNS161659