Citation

Sordello M, Small DS. Stat. Med. 2020; ePub(ePub): ePub.

Affiliation

Department of Statistics, Wharton School, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

Copyright

(Copyright © 2020, John Wiley and Sons)

DOI

10.1002/sim.8551

PMID

32394455

Abstract

We propose a method to test for the presence of differential ascertainment in case-control studies, when data are collected by multiple sources. We show that, when differential ascertainment is present, the use of only the observed cases leads to severe bias in the computation of the odds ratio. We can alleviate the effect of such bias using the estimates that our method of testing for differential ascertainment naturally provides. We apply it to a dataset obtained from the National Violent Death Reporting System, with the goal of checking for the presence of differential ascertainment by race in the count of deaths caused by child maltreatment.

© 2020 John Wiley & Sons, Ltd.

Language: en

Keywords

Rasch model; capture-recapture; case-control studies; differential ascertainment; hypothesis testing