January 2022, Vol 176, No. 1, Pages 7-108

This stepped-wedge, cluster randomized clinical trial assesses whether hospital exposure vs no exposure to a quality improvement intervention bundle increases use of isotonic maintenance intravenous fluids and decreases laboratory testing among hospitalized patients.

This randomized clinical trial evaluates the noninferiority and safety of oral nadolol compared with oral propranolol in infants with infantile hemangiomas.

This systematic review and meta-analysis summarizes the findings of epidemiological studies on the prevalence of cannabis vaping among adolescents and examines whether survey year and school grades are sources of variability.

This quasi-experimental study examines whether litigation is associated with reductions in homophobic bullying among students in California high schools.

This cohort study of households in selected Utah counties and New York City, New York, compares incidence rates and clinical characteristics of SARS-CoV-2 infection among adults and children and prospectively assesses infection risks.

This surveillance study examines the rate of vaccination and proportion of individuals up to date with vaccines in a cohort of 2.8 million children aged 0 to 18 years across 8 US health systems.

This cohort study estimates associations between being placed in out-of-home care in childhood and adolescence and subsequent risks of experiencing a wide range of social and health outcomes in adulthood following comprehensive adjustments for preplacement factors.

This cluster randomized clinical trial assesses the effectiveness of a multifaceted intervention for obesity prevention by promoting healthy diet and physical activity and engaging schools and families of primary school children in China.