Minimizing Attrition for Multisite Emergency Care Research.

Area of Science:

• Emergency Medicine
• Clinical Research Methodology
• Epidemiology

Background:

• Patient attrition (loss to follow-up) significantly threatens the validity and statistical power of clinical studies.
• Multicenter emergency care research, often conducted through networks, faces unique challenges in minimizing patient attrition.
• Limited research has described effective strategies for reducing attrition in large-scale, multicenter emergency department studies.

Purpose of the Study:

• To describe a stepwise approach for minimizing patient attrition in multisite emergency care research.
• To present a case example of a successful implementation of these strategies in a large prospective cohort study.

Main Methods:

• A prospective cohort study enrolled over 3,000 patients in emergency departments across multiple sites.
• Key strategies included careful patient selection, robust baseline contact information collection, patient incentives, and multi-pronged patient tracking methods.
• Centralized phone banks, local site support, and continuous performance monitoring were employed to maintain follow-up.

Main Results:

• The study achieved a 30-day direct phone follow-up attrition rate of less than 3%.
• Seven core areas of focus were identified and implemented to minimize patient loss to follow-up.
• The described methods proved effective in a large, real-world emergency care research setting.

Conclusions:

• Implementing a structured, stepwise approach is effective in minimizing patient attrition in multisite emergency care studies.
• Proactive strategies focusing on patient engagement and data integrity are essential for maintaining study validity.
• Consideration of attrition-minimization methods during the study design phase is a worthwhile investment for improving research outcomes.