What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are AFSW Guided DOAC, or Continuous DOAC therapy. The registry lists allocation as randomized. REACT-AF is a multicenter prospective, randomly assigned, open-label, blinded endpoint (PROBE design), controlled trial comparing the current Standard Of Care (SOC) of continuous Direct Oral Anticoagulation (DOAC) use versus time-delimited (1 month) DOAC guided by an AF-sensing Smart Watch (AFSW) in participants with a history of paroxysmal or persistent Atrial Fibrillation (AF) and low-to-moderate stroke risk.
They plan to enroll about 5,350 people at 93 sites. Taking part typically means taking a study drug (or dummy pill), using or being fitted with a device plus check-ins.
Official title (unrewritten)
REACT-AF: Rhythm Evaluation for AntiCoagulaTion With Continuous Monitoring of Atrial Fibrillation
Interventions: AFSW Guided DOAC, Continuous DOAC therapy
Primary outcome (registry wording): To assess whether AFSW-guided, time-delimited DOAC therapy is non-inferior to continuous DOAC therapy for a composite endpoint that includes: (1) Ischemic stroke; (2) Systemic embolism; (3) All-cause mortality.