Skip Navigation LinksHome > January 2011 - Volume 22 - Issue 1 > Erratum: Bias Formulas for Sensitivity Analysis for Direct a...
Epidemiology:
doi: 10.1097/EDE.0b013e3181edae08
Errata

Erratum: Bias Formulas for Sensitivity Analysis for Direct and Indirect Effects

Free Access
Back to Top | Article Outline

Reference

VanderWeele TJ. Bias formulas for sensitivity analysis for direct and indirect effects. Epidemiology. 2010;21:540–551. View Full Text | PubMed | CrossRef

In Appendix 1 of the paper “Bias formulas for sensitivity analysis for direct and indirect effects,” the formula for the bias of the natural direct effect risk ratio was written as:

and ought to have been written as

Equation (Uncited)
Equation (Uncited)
Image Tools

where

Equation (Uncited)
Equation (Uncited)
Image Tools

To obtain the simpler formulas in Appendix 1 for the natural direct and indirect effect risk ratio bias terms:

Equation (Uncited)
Equation (Uncited)
Image Tools

an additional assumption that vm = 1 for all m is necessary ie, M has no effect on Y when the unmeasured confounder is absent. The more general results are given in the eAppendix of the original paper.

Equation (Uncited)
Equation (Uncited)
Image Tools
Equation (Uncited)
Equation (Uncited)
Image Tools

© 2011 Lippincott Williams & Wilkins, Inc.

Twitter  Facebook

Login

Article Tools

Images

Share