# A Study to Investigate if Early Atrial Fibrillation (AF) Diagnosis Reduces Risk of Events Like Stroke in the Real-World

> **NCT04276441** · — · COMPLETED · sponsor: **Janssen Scientific Affairs, LLC** · enrollment: 34244 (actual)

## Conditions studied

- Atrial Fibrillation

## Interventions

- **DEVICE:** Heart healthy Engagement Program with the Apple Watch Series 5 or later
- **DEVICE:** Anti-Coagulation Adherence Module with the Apple Watch Series 5 or later

## Key facts

- **NCT ID:** NCT04276441
- **Lead sponsor:** Janssen Scientific Affairs, LLC
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-02-25
- **Primary completion:** 2025-01-23
- **Final completion:** 2025-01-23
- **Target enrollment:** 34244 (ACTUAL)
- **Last updated:** 2025-07-18

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04276441

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04276441, "A Study to Investigate if Early Atrial Fibrillation (AF) Diagnosis Reduces Risk of Events Like Stroke in the Real-World". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT04276441. Licensed CC0.

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