Powering Up for the Head Start on Science Program: Using Power Analysis to Plan the Sample Size Required for a Multi-Site Cluster Randomized Trial
This intermediate session demonstrated how we conducted an a priori power analysis for a longitudinal,multisite cluster randomized trial of an early childhood science education program, then later revised it to accommodate budget changes suggested by the funder without compromising the viability of the study. We covered how the research questions, design, and analysis plan informed the power analysis approach; the software we used; and what the input parameters required actually represent.
This intermediate session demonstrated how we conducted an a priori power analysis for a longitudinal,multisite cluster randomized trial of an early childhood science education program, then later revised it to accommodate budget changes suggested by the funder without compromising the viability of the study.
