# AI for Patient Recruitment & Retention
Patient enrollment is the single largest bottleneck in clinical development. The average Phase 3 trial takes 12-18 months to fully enroll, and 80% of trials fail to meet their initial enrollment timelines. This adds an estimated $600K-$8M in costs per day of delay for a blockbuster drug.
Clinical trial eligibility criteria define a narrow patient population. Matching real patients to these criteria requires screening medical records, lab results, imaging reports, concomitant medications, and medical histories — a process that is overwhelmingly manual at most sites.
AI can transform this by analyzing Electronic Health Record (EHR) data at scale:
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What you'll learn: