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Trial design considerations in the face of overdispersion and time-varying event rates: a meta-regression approach with an application in asthma

Chen, Bohua et al.
arXiv (All) · Papers
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**Purpose:** Relative changes in event rates are a common primary endpoint in confirmatory asthma trials. Reliable assumptions about baseline event rates and extra-Poisson variability are essential for sample size planning. We synthesize placebo-group exacerbation data, evaluate calendar-time trends
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