The Effect of Cluster Size Variability on Statistical Power in Cluster-Randomized Trials

The Effect of Cluster Size Variability on Statistical Power in Cluster-Randomized Trials

The frequency of cluster-randomized trials (CRTs) in peer-reviewed literature has increased exponentially over the past two decades. CRTs are a valuable tool for studying interventions that cannot be effectively implemented or randomized at the individual level. However, some aspects of the design and analysis of data from CRTs are more complex than those for individually randomized controlled ...

Effect of Educational Intervention on Fear of Falling in the Elderly People: A Randomized Cluster Trial

Aims: Falls are one of the most common health problems for persons over 60 years old. The elderly person will suffer from physical, mental-psychological, and social problems after falling. The aim of the present study was to determine the effect of educational intervention on fear of falling in the elderly people in Ahvaz. Materials & Methods: This study was a randomized controlled clinical tr...

the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests

در این پایان نامه تاثیر دو نوع تست جزیی نگر و کلی نگر بر به یادسپاری محتوا ارزیابی شده که نتایج نشان دهندهکارایی تستهای کلی نگر بیشتر از سایر آزمونها است

Cluster Unit Randomized Trials

Cluster randomized controlled trials.

Cluster randomized controlled trial (RCT), in which groups or clusters of individuals rather than individuals themselves are randomized, are increasingly common. Indeed, for the evaluation of certain types of intervention (such as those used in health promotion and educational interventions) a cluster randomized trial is virtually the only valid approach. However, cluster trials are generally m...