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American Journal of Epidemiology Advance Access originally published online on September 17, 2007
American Journal of Epidemiology 2007 166(9):1003-1004; doi:10.1093/aje/kwm230
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American Journal of Epidemiology © The Author 2007. Published by the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

Response to Invited Commentary

Petersen et al. Respond to "Effect Modification by Time-varying Covariates"

Maya L. Petersen and Mark J. van der Laan

From the Division of Biostatistics, School of Public Health, University of California, Berkeley, CA

Correspondence to Dr. Maya L. Petersen, Division of Biostatistics, School of Public Health, University of California, Berkeley, Earl Warren Hall #7360, Berkeley, CA 94720-7360 (e-mail: mayaliv@gmail.com).

Received for publication March 30, 2007. Accepted for publication July 23, 2007.

The first 10% of the full text of this article appears below.

We thank Robins et al. (1) for their thoughtful commentary on our article (2). Before responding, we wish to point out that they altered our notation slightly, using m rather than j to refer to the baseline time point.

Robins et al. distinguish between two types of history-adjusted marginal structural models (HA-MSMs), those that consider an outcome at a fixed time point ("group 1," or . . . [Full Text of this Article]


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Related articles in Am. J. Epidemiol.:

History-adjusted Marginal Structural Models for Estimating Time-varying Effect Modification
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