Observational study designs like cohort, case-control, and cross-sectional are the backbone of epidemiology, but each comes with unique strengths, limitations, and bias risks. Understanding these ...

Over the past decade, an increasing number of observational studies have examined the effectiveness or safety of treatments for rheumatoid arthritis. Unlike randomized controlled trials (RCTs), ...

Resources for observational comparative research have expanded enormously in recent years to include very large sources of ...

Noninferiority clinical trials have become a major tool for the evaluation of drugs, devices, biologics, and other medical treatments. Treatment with placebo or with a no-treatment control in a study ...

High-quality evidence is what we use to guide medical practice. The standard approach to generating this evidence — a series of clinical trials, each investigating one or two interventions in a single ...

Clinical trials are well-controlled and designed experiments that aim to prove that an Investigational Medicinal Product (IMP) is effective. Clinical trial data is submitted to the national health ...

As biomarker studies employ increasingly complex and expensive genomics and other correlative methods, it is increasingly important to rigorously design these studies and analyze the downstream ...