American Journal of Epidemiology Advance Access originally published online on August 2, 2005
American Journal of Epidemiology 2005 162(6):603; doi:10.1093/aje/kwi252
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American Journal of Epidemiology Copyright © 2005 by the Johns Hopkins Bloomberg School of Public Health All rights reserved
LETTERS TO THE EDITOR |
THE AUTHORS REPLY
1 Clinical Research Unit, Hvidovre University Hospital, University of Copenhagen, DK-2650 Hvidovre, Denmark
2 Division of Public Health Community Medicine, Department of Clinical Science, Malmö University Hospital, Lund University, S-205 02 Malmö, Sweden
| The first 10% of the full text of this article appears below. |
We read the letter by Dr. Kaufman (1
) with great interest, and we thank him for raising a point that is important for the motivation of one of the two measures (the interval odds ratio) that is advocated in our article (2
).
Kaufman argues that the cluster-level fixed effects may be given a counterfactual interpretation. As