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preference: 2-Stage Preference Trial Design and Analysis
Design and analyze two-stage randomized trials with a continuous
outcome measure. The package contains functions to compute the required
sample size needed to detect a given preference, treatment, and selection
effect; alternatively, the package contains functions that can report the
study power given a fixed sample size. Finally, analysis functions are
provided to test each effect using either summary data (i.e. means,
variances) or raw study data <doi:10.18637/jss.v094.c02>.
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