Skip Navigation


IJE Advance Access originally published online on January 24, 2006
International Journal of Epidemiology 2006 35(2):491; doi:10.1093/ije/dyi313
This Article
Right arrow Extract Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
35/2/491    most recent
dyi313v1
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 Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (1)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Lee, P N
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lee, P N
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Published by Oxford University Press on behalf of the International Epidemiological Association © The Author 2006; all rights reserved.

Letter to the Editor

Maternal smoking during pregnancy and offspring IQ

P N Lee

P.N. Lee Statistics and Computing Ltd, 17 Cedar Road, Sutton, Surrey SM2 5DA, UK

E-mail: PeterLee{at}pnlee.demon.co.uk

Sirs,

Breslau et al.1 report that a strong association between maternal smoking during pregnancy and the IQ of the offspring is eliminated by adjustment for various maternal characteristics. The final model (model 4 in tables 5 and 6) includes low birthweight as one of the characteristics adjusted for. Since maternal smoking during pregnancy may affect the prevalence of low birthweight, inclusion of low birthweight in the model may be regarded as possible over adjustment. It would be interesting to know whether the main conclusion would still remain if adjustment was made only for maternal IQ, education, and urban/rural residence and not for low birthweight.

Conflict of Interest statement: I am a long-term consultant to the tobacco industry.

References

1 Breslau N, Paneth N, Lucia VC, Paneth-Pollak R. Maternal smoking during pregnancy and offspring IQ. Int J Epidemiol 2005;34:1047–53.[Abstract/Free Full Text]


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



This Article
Right arrow Extract Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
35/2/491    most recent
dyi313v1
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 Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (1)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Lee, P N
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lee, P N
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?