Work

Invited Commentary: Selection Bias Without Colliders

Year: 2017

Type: editorial

Abstract: In causal analyses, conditioning on a collider generally results in selection bias. Conditioning on a prognostic factor that is independent of the exposure-and therefore is not a collider-can also result in selection bias when 1) the exposure has a non-null effect on the outcome and 2) the association between the noncollider and the outcome is heterogenous across levels of the exposure. This result was empirically demonstrated by Greenland in 1977 (Am J Epidemiol. 1977;106(3):184-187).

Source: American Journal of Epidemiology

DOI: 10.1093/aje/kwx077

Author: Miguel A. Hernán

Institution: Harvard University

Language: English

Topic: Advanced Causal Inference Techniques

Subfield: Statistics and Probability

Field: Mathematics

Domain: Physical Sciences

Open Access status: bronze

Funders: Harvard T.H. Chan School of Public Health, National Institutes of Health, National Institute of Allergy and Infectious Diseases

Awards: G5520316217, Dynamic strategies for the clinical management of HIV disease, G9000251460, G9000288322