Simulation-Based Power Calculations for Mixed Effects Modeling: ipdpower in Stata

Evangelos Kontopantelis, David A Springate, Rosa Parisi and David Reeves

Journal of Statistical Software, 2016, vol. 074, issue i12

Abstract: Simulations are a practical and reliable approach to power calculations, especially for multi-level mixed effects models where the analytic solutions can be very complex. In addition, power calculations are model-specific and multi-level mixed effects models are defined by a plethora of parameters. In other words, model variations in this context are numerous and so are the tailored algebraic calculations. This article describes ipdpower in Stata, a new simulations-based command that calculates power for mixed effects two-level data structures. Although the command was developed having individual patient data meta-analyses and primary care databases analyses in mind, where patients are nested within studies and general practices respectively, the methods apply to any two-level structure.

Date: 2016-10-28
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Persistent link: https://EconPapers.repec.org/RePEc:jss:jstsof:v:074:i12

DOI: 10.18637/jss.v074.i12

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