Sampling designs for rare time-dependent exposures: a comparison of the nested exposure case-control design and exposure density sampling

Abstract: In extensive cohort studies, the ascertainment of covariate information on all individuals can be challenging. In hospital epidemiology, an additional issue is often the time-dependency of the exposure of interest. We revisit and compare two sampling designs constructed for rare time-dependent exposures and possibly common outcomes – the nested exposure case-control design and exposure density sampling. Both designs enable efficient hazard ratio estimation by sampling all exposed individuals but only a small fraction of the unexposed ones. Moreover, they account for time-dependent exposure to avoid immortal time bias. We evaluate and compare their performance using data of patients hospitalised in the neuro-intensive care unit at the Burdenko Neurosurgery Institute in Moscow, Russia. Three different types of hospital-acquired infections with different prevalence are considered. Additionally, inflation factors, a primary performance measure, are discussed. We enhance both designs to allow for a competitive analysis of combined and competing endpoints compared to the full cohort approach while substantially reducing the amount of necessary information. Nonetheless, exposure density sampling outperforms the nested exposure case-control design concerning efficiency and accuracy in most considered settings

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch
Anmerkungen
Epidemiology and infection. - 149 (2021) , e122, ISSN: 1469-4409

Ereignis
Veröffentlichung
(wo)
Freiburg
(wer)
Universität
(wann)
2021
Urheber

DOI
10.1017/s095026882100090x
URN
urn:nbn:de:bsz:25-freidok-2180827
Rechteinformation
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Letzte Aktualisierung
14.08.2025, 10:57 MESZ

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  • 2021

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