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Using inverse probability weighting to address post-outcome collider bias

Abstract:
We consider the problem of bias arising from conditioning on a post-outcome collider. We illustrate this with reference to Elwert and Winship (2014) but we go beyond their study to investigate the extent to which inverse probability weighting might offer solutions. We use linear models to derive expressions for the bias arising in different kinds of post-outcome confounding, and we show the specific situations in which inverse probability weighting will allow us to obtain estimates that are consistent or, if not consistent, less biased than those obtained via ordinary least squares regression.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1177/00491241211043131

Authors


More by this author
Institution:
University of Oxford
Division:
SSD
Department:
Sociology
Oxford college:
Nuffield College
Role:
Author
ORCID:
0000-0002-9718-0743
More by this author
Institution:
University of Oxford
Division:
SSD
Department:
Sociology
Research group:
Leverhulme Centre for Demographic Science
Oxford college:
Nuffield College
Role:
Author
ORCID:
0000-0002-3633-5246


Publisher:
SAGE Publications
Journal:
Sociological Methods and Research More from this journal
Volume:
53
Issue:
1
Pages:
5-27
Publication date:
2021-11-17
DOI:
EISSN:
1552-8294
ISSN:
0049-1241


Language:
English
Keywords:
Pubs id:
1212376
Local pid:
pubs:1212376
Deposit date:
2023-07-01

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