This JAMA Guide to Statistics and Methods describes collider bias, illustrates examples in directed acyclic graphs, and explains how it can threaten the internal validity of a study and the accurate estimation of causal relationships in randomized clinical trials and observational studies.
This cohort study examines whether participation in the Centers for Medicare & Medicaid Services’ Comprehensive Primary Care Plus model was associated with improved access to…
This study examines the strength of association between surrogate markers used as primary end points in clinical trials to support FDA approval of drugs treating…
This ecological cohort study estimates the proportion of infant and child mortality associated with armed conflict exposure from 1998 to 2019 in Colombia.
This study examines prevalence of iron deficiency among females aged 12 to 21 years to inform future screening strategies for iron deficiency and iron-deficiency anemia.
This cost-effectiveness analysis examines screening strategies and their predicted association with reducing COVID-19 mortality in nursing homes.
This systematic review and meta-analysis evaluates the complication, emergency department, and hospital readmission rates associated with telemedicine vs conventional care in patients who underwent abdominal…
This Medical News story discusses a clinical trial that tested symptom-guided exercise for patients with long COVID and postexertional malaise.
How people consume information is evolving. So is JAMA Medical News. This issue debuts JAMA Data Brief, a new department in the journal’s long-standing Medical…
This Medical News article discusses a KFF poll about the public’s exposure to and beliefs about inaccurate health information, as well as media use and…
This randomized clinical trial assesses the safety and effectiveness of plozasiran, an investigational APOC3-targeted drug, in the reduction of serum triglyceride level in patients with…
