How to Improve Patient Adherence When Using Wearable Devices in Trials

The Adherence Challenge in Wearable-Driven Trials

One of the most underestimated risks in wearable-enabled clinical trials is patient non-adherence. Unlike traditional clinic visits, wearable devices require patients to actively wear, charge, sync, and troubleshoot devices in real-world settings. If adherence drops, so does data quality—jeopardizing endpoint reliability and increasing the risk of protocol deviations.

According to FDA guidance on patient engagement in digital health studies, adherence should be proactively planned and monitored, especially in decentralized or hybrid trials. Non-wear time, improper use, and sync failures can all create data gaps that are difficult to rectify retrospectively.

In a CRO-led oncology trial using wearable temperature patches, 22% of subjects failed to sync their devices weekly. This led to missing data for primary timepoints, requiring imputation and impacting statistical power. Addressing adherence is therefore not optional—it’s critical.

Key Factors Affecting Adherence to Wearables

To manage adherence, sponsors must first understand what influences it. Factors include:

• Device Comfort: Devices that irritate skin or are bulky reduce wear time
• Battery Life: Frequent charging becomes burdensome for patients
• User Interface: Poor app design leads to frustration or misuse
• Forgetfulness: Especially in elderly or multi-tasking patients
• Lack of Feedback: If patients don’t see data or benefits, motivation drops

Consider the following dummy table summarizing common dropout causes by wearable type:

Patient-Centric Design and Onboarding

Adherence starts with device selection and onboarding. CROs and sponsors must choose wearables that align with patient comfort and usability profiles. During onboarding:

• Provide live device demos at screening or baseline visits
• Use videos and visual guides with simple language
• Assess physical limitations (e.g., arthritis) that may impact device use
• Conduct “mock run-ins” to simulate usage before enrollment

At PharmaValidation, a sponsor implemented a 3-day trial onboarding phase with a wearable ECG patch. Only subjects with 90% adherence were then randomized—leading to 92% overall study compliance.

Using Behavioral Science to Drive Adherence

Beyond tech fixes, behavioral science offers tools to nudge adherence:

• Reminders: Push notifications for sync/charge events
• Progress Feedback: Weekly adherence scores or badges
• Social Incentives: Optional community forums or peer groups
• Gamification: Earning points for consistent use

For example, in a diabetes trial, participants receiving weekly summary charts of their wearable-collected glucose patterns had 26% higher sync rates than those who received no feedback.

Training Site Staff to Monitor and Motivate Patients

Clinical sites play a vital role in promoting adherence. Site coordinators should be trained to:

• Review adherence dashboards weekly
• Call patients after multiple sync failures
• Identify root causes during visits (e.g., device discomfort)
• Escalate tech issues to centralized support promptly

Sponsors may include wearable adherence tracking in site-level performance metrics. According to ClinicalStudies.in, a site adherence contest resulted in 15% higher device wear time and reduced dropout in a sleep apnea study.

Dashboards and Real-Time Monitoring Systems

CROs and sponsors must establish real-time monitoring systems that flag non-adherence. Typical dashboard metrics include:

• Daily wear time (e.g., >10 hours per day)
• Sync success rate (e.g., 95% in past 7 days)
• Battery status (e.g., <15% battery triggers alert)
• Missed scheduled uploads

Below is an example dummy dashboard layout:

Mitigating Dropout Risk Through Contingency Plans

Despite best efforts, some dropout is inevitable. Sponsors must develop backup plans to reduce the impact:

• Offer alternative devices with easier usability
• Have spare devices readily available for loss/damage
• Allow paper-based backup logs in validated format
• Use patient engagement specialists for high-risk cases

Device-related dropouts must be analyzed via CAPA and logged under deviation management systems. Tracking root causes across studies helps refine onboarding and design decisions.

Conclusion: Building a Culture of Adherence

Wearables bring the promise of real-time, continuous data—but only if patients actually use them. Ensuring patient adherence requires a multidisciplinary approach involving behavioral psychology, training, real-time tech monitoring, and feedback loops.

Sponsors and CROs who embed adherence strategies into the heart of trial design will protect endpoint quality, reduce protocol deviations, and enhance participant experience. Adherence isn’t just about compliance—it’s about connection, communication, and care.