Cohort studyResearch

An observational study tracking a group over time to see who develops an outcome.

A cohort study follows a defined group of people (a cohort), classified by exposure status (e.g. training load, injury history) at baseline, and observes them over time to compare outcome rates between exposed and unexposed subgroups. It can be prospective (data collected going forward) or retrospective (using existing records), and establishes association rather than causation, since confounding and selection effects are common threats. It sits above case-control studies but below randomised controlled trials in typical evidence hierarchies.

• Comparing Postconcussion Sway Balance and Cognitive Test Performance With Preinjury Baseline Identifies a Higher Percentage of Impaired Concussed Athletes Than Comparison With Normative Values · issue 001
• Effect of Time Since Baseline Data Collection, Mechanism of Injury, and Service Academy Sub-population on Concussion Risk Prediction in Military Service Academy Cadets and Midshipmen: An Observational Study · issue 001
• Subjective Shoulder Instability Following Anterior Stabilization: Incidence and Time to Resolution After Latarjet Versus Bankart Repair · issue 004
• Achilles Tendon Injuries in Major League Soccer: A 10-year Analysis of Injury Rate, Return to Play, and Performance Metrics · issue 004
• Association of Persistent Interlimb Kinetic Asymmetry at Return to Sport With Increased Risk of Contralateral Anterior Cruciate Ligament Injury · issue 006
• Does Recalibration Response Shift Alter Perceived Treatment Effects in Patient-Reported Outcomes After Anterior Cruciate Ligament Reconstruction? · issue 006
• Factors Associated With Return to Sport at Minimum 10-Year Follow-up in Athletes With Borderline Hip Dysplasia Undergoing Hip Arthroscopy With Capsular Plication. · issue 007
• Comparative Postoperative Outcomes After Rotator Cuff Repair in Tobacco and Nontobacco Nicotine Users · issue 007
• Screw Versus Suture Bridge Fixation for Medial Femoral Condyle Osteochondritis Dissecans Demonstrate Comparable Healing Rates · issue 008

This guide was auto-drafted and is pending editorial review.