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The exposure-crossover design is a new method for studying sustained changes in recurrent events
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Journal Article
The exposure-crossover design is a new method for studying sustained changes in recurrent events
2013
Overview
To introduce a new design that explores how an acute exposure might lead to a sustained change in the risk of a recurrent outcome.
The exposure-crossover design uses self-matching to control within-person confounding due to genetics, personality, and all other stable patient characteristics. The design is demonstrated using population-based individual-level health data from Ontario, Canada, for three separate medical conditions (n > 100,000 for each) related to the risk of a motor vehicle crash (total outcomes, >2,000 for each).
The exposure-crossover design yields numerical risk estimates during the baseline interval before an intervention, the induction interval immediately ahead of the intervention, and the subsequent interval after the intervention. Accompanying graphs summarize results, provide an intuitive display to readers, and show risk comparisons (absolute and relative). Self-matching increases statistical efficiency, reduces selection bias, and yields quantitative analyses. The design has potential limitations related to confounding, artifacts, pragmatics, survivor bias, statistical models, potential misunderstandings, and serendipity.
The exposure-crossover design may help in exploring selected questions in epidemiology science.
Publisher
Elsevier Inc,Elsevier,Elsevier Limited
Subject
Accidents, Traffic - statistics & numerical data
/ Bias
/ Biological and medical sciences
/ Comparative effectiveness research
/ Design
/ Diet
/ Epidemiologic Research Design
/ Epidemiologic research designs
/ Exposure
/ Genetics
/ Humans
/ Methods
/ Ontario
/ Outcome and process assessment
/ Patients
/ Public health. Hygiene-occupational medicine
/ Studies
