Skip Navigation

Biometrika 1995 82(3):633-638; doi:10.1093/biomet/82.3.633
© 1995 by Biometrika Trust
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by DRAKE, C.
Right arrow Articles by McQUARRIE, A.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

MISCELLANEA

A note on the bias due to omitted confounders

CHRISTIANA DRAKE and ALLAN McQUARRIE

Division of Statistics, University of California Davis, California 95616, U. S. A

Received for publication 1 November 1992. Revision received 1 December 1994.
  Abstract

In observational studies some confounders may be unknown and therefore omitted from the analysis while others are adjusted for. Approximations to the functions defining the relationship between the parameters in the full and reduced models are proposed leading to asymptotic bias estimates. Numerical calculations for logistic and Poisson regression models show good agreement between asymptotic and simulation bias. A data set containing the relationship between low birth weight and smoking (Hosmer & Lemeshow, 1989) is used as an illustration.

Key Words: Bias • Confounding • Generalised linear model • Omitted covariates


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Am J EpidemiolHome page
L. Nie
Re: "Methods of Covariate Selection: Directed Acyclic Graphs and the Change-in-Estimate Procedure"
Am. J. Epidemiol., November 15, 2009; 170(10): 1320 - 1320.
[Full Text] [PDF]

Home page
 Am J EpidemiolHome page
H.-Y. Weng, L. L. McV. Messam, and I. Hertz-Picciotto
Three of the Authors Reply
Am. J. Epidemiol., November 15, 2009; 170(10): 1320 - 1321.
[Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.