Clinical prediction rules (CPRs) that predict the absolute risk of a clinical condition or future
outcome for individual patients are abundant in the medical literature; however, systematic …

It has long been recognized that sample size calculations for cluster randomized trials
require consideration of the correlation between multiple observations within the same …

INTRODUCTION Mask usage remains low across many parts of the world during the COVID-
19 pandemic, and strategies to increase mask-wearing remain untested. Our objectives …

Abstract Background Cluster randomized trials (CRTs) are increasingly used to assess the
effectiveness of health interventions. Three main analysis approaches are: cluster-level …

statistics-based power analysis: A new and practical method to determine sample size for
mixed-effects modeling. © 2022 American Psychological Association Psychological Methods …

In 2004, Murray et al. reviewed methodological developments in the design and analysis of
group-randomized trials (GRTs). We have highlighted the developments of the past 13 years …

Evaluating whether an intervention works when trialled in groups of individuals can pose
complex challenges for clinical research. Cluster randomised controlled trials involve the …

Serological surveys can provide evidence of cases that were not previously detected, depict
the spectrum of disease severity, and estimate the proportion of asymptomatic infections. To …

Background Malnutrition underlies 3 million child deaths worldwide. Current treatments
differentiate severe acute malnutrition (SAM) from moderate acute malnutrition (MAM) with …

Background The acute: chronic workload ratio (ACWR) is commonly used to manage
training load in sports, particularly to reduce injury risk. However, despite its extensive …