This summary provides the key points from the document in 3 sentences:
The document discusses the importance of proactive planning for patient recruitment and retention in clinical trials to avoid costly delays. It notes that unforeseen factors can negatively impact enrollment and retention, so contingency plans should be in place. Effective planning involves analyzing potential barriers, partnering with community organizations, selecting sites and coordinators strategically, and having metrics to trigger contingency strategies if enrollment begins falling off track.