There are multiple definitions:

1. early asthmatic response(English)

   • AHR, LAR, BDP, BUD, FEV1, FP, PC15, SCG
   • Pulmonology, Asthma
   • https://doi.org…aci.2006.07.012
   • https://doi.org…mai.2000.107396

2. Estimated Average Requirement(English)

   • DRI, DRV, RDA, HAZ, PZn, Zn
   • Nutrition, Guidelines
   • https://doi.org…5/jn.115.216606

3. episodic allergic rhinitis(English)

   • caused by exposure to a specific airborne allergen on a sporadic and short-term basis
   • ALTR, AR, PAR, SAR
   • Allergy, ENT
   • https://doi.org…/ada.2018.75749

4. ellipsoidal area ratio(English)

   • a new diffusion anisotropy index, which proved to be less noise-sensitive than fractional anisotropy (FA) by theory and simulation
   • DT, FA, MRI, SNR, DAI, DTI
   • Medical imaging, Ratio-based metric
   • https://doi.org…mri.2009.12.015

5. electronically activated recorder(English)

   • captures naturalistically observed interactions for self-reported interpersonal problems in young adults with type 1 diabetes
   • DM, HbA1C
   • Diabetes
   • https://doi.org…46.2021.1960345

6. excess absolute rate(English)

   • ionizing radiation is associated with increased risk of proximal and distal colon cancers
   • BMI, CRC, ERR
   • Radiotherapy /radiation, Gastroenterology, Risk factor
   • https://doi.org….1002/ijc.32275