Inclusion of unexposed clusters improves the precision of fixed effects analysis of stepped-wedge cluster randomized trials with binary and count outcomes

Inclusion of unexposed clusters improves the precision of fixed effects analysis of stepped-wedge cluster randomized trials with binary and count outcomes

Abstract Background The fixed effects model is a useful alternative to the mixed effects model for analyzing stepped-wedge cluster randomized trials (SW-CRTs). It controls for all time-invariant cluster-level confounders and has proper control of type I error when the number of clusters is small. Wh...

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Bibliographic Details
Main Authors: Kenneth Menglin Lee, Grace Meijuan Yang, Yin Bun Cheung
Format: Article
Language:English
Published: BMC 2024-10-01
Series:BMC Medical Research Methodology
Subjects:
Stepped wedge trials
Cluster randomized trials
Fixed effects model
Precision
Binary outcomes
Count outcomes
Online Access:https://doi.org/10.1186/s12874-024-02379-z
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https://doi.org/10.1186/s12874-024-02379-z

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