There are multiple definitions:

1. platelet activating factor(English)

   • a bioactive proinflammatory phospholipid
   • PAF-R
   • Thrombocyte /thrombosis

2. paroxysmal atrial fibrillation(English)

   • the most common AF category encountered in incident or recently diagnosed NVAF. Also denoted as pAF or pxAF
   • AF, NVAF, OAC, MR-proANP, NR, PVI, VVI, PAC, pAF, pxAF, CPAF, KIDAF, HSC, NPAF, LSP-AF, AAD, AE, AFEQT, AFL, AT, BMI, CHA2DS2-VASc, CTI, DCCV, EAM, PAE, PEE, PFA, PV
   • Electrophysiology, Cardiology, Pathology, Risk factor, Metabolism
   • https://doi.org…OMES.117.003669
   • https://doi.org…acc.2022.01.042
   • https://doi.org….1002/jcu.23555
   • https://doi.org…390/jcm11195740
   • https://doi.org…cep.2020.08.016
   • https://doi.org…NAHA.124.070333

3. Population Attributable Fraction(English)

   • proportional reduction in population disease or mortality that would occur if exposure to a risk factor were reduced to an alternative ideal exposure scenario
   • ASCVD, CAD, CMD, CMM, FCMD, FSRS, PAD, PRS, RMST, T2DM, UKB
   • Epidemiology, Statistics, Risk factor, Atherosclerosis /atherogenic, Genetics, Metabolism, Diet
   • https://www.who…metrics_paf/en/
   • https://doi.org…LURE.120.008113
   • https://doi.org…jnl-2024-325355

4. principal axis factor [analysis](English)

   • CFA, FRS, EFA, PFA
   • Psychology, Statistics, Psychosis
   • https://doi.org…res.2013.04.032
   • https://doi.org…yon.2023.e22270