American Journal of Epidemiology Advance Access originally published online on March 22, 2006
American Journal of Epidemiology 2006 163(9):872-873; doi:10.1093/aje/kwj135
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American Journal of Epidemiology Copyright © 2006 by the Johns Hopkins Bloomberg School of Public Health All rights reserved; printed in U.S.A.
Letter to the Editor |
TWO OF THE AUTHORS REPLY
Clinic of Obstetrics, Division of "Experimental Obstetrics," Campus Virchow-Klinikum, CharitéUniversity Medicine Berlin, 13353 Berlin, Germany
(e-mail: thomas.harder@charite.de)
| The first 10% of the full text of this article appears below. |
We thank Ms. Quigley (1
) for her observations. Ms. Quigley raises concerns about our recent meta-analysis on duration of breastfeeding and risk of overweight (2
). In essence, her comments focus on the possible impact and causes of heterogeneity and confounding and suggest that a meta-analysis on this research topic might have been inappropriate. While the majority of her concerns on sources of heterogeneity