Immeasurable Time Bias in Self-controlled Designs: Case-crossover, Case-time-control, and Case-case-time-control Analyses.

J Epidemiol · 2023 · PMC9794445 · PMID 34053964

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an increasing trendno p-value reported

Sixth, future studies are warranted to investigate the impact of immeasurable time bias in self-controlled designs that assess chronic exposures, as there is an increasing trend in the use of these designs for such exposures.

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