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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
The Effect Of Cluster Size Variability On Statistical Power In Cluster-Randomized Trials, Stephen A. Lauer, Ken P. Kleinman, Nicholas G. Reich
The Effect Of Cluster Size Variability On Statistical Power In Cluster-Randomized Trials, Stephen A. Lauer, Ken P. Kleinman, Nicholas G. Reich
Biostatistics and Epidemiology Faculty Publications Series
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 trials. One of the key components to designing a successful CRT is calculating the proper sample size (i.e. number of clusters) needed to attain an acceptable level of statistical power. In order to do this, a researcher must make assumptions about the value …
Growing Our Vision Together: Forming A Sustainability Community Within The American Library Association, Beth Filar Williams, Madeleine K. Charney, Bonnie Smith
Growing Our Vision Together: Forming A Sustainability Community Within The American Library Association, Beth Filar Williams, Madeleine K. Charney, Bonnie Smith
University Libraries Publication Series
As long-standing keepers of democracy and information stewardship, library professionals are a natural fit for advocating and promoting sustainability within their communities. From seed libraries to Occupy Wall Street libraries, their view of sustainability extends beyond environmental concerns to include community activism, economic development, and social equity. Empowering people, facilitating dialogue, and providing resources for a more resilient future are at the center of librarians’ vital and changing roles. These visionary professionals have powered libraries’ work as outspoken advocates with well-founded initiatives. For a long time, however, there was no cohesive sustainability-focused venue for sharing best practices, collaborating, and contributing …