Commentary: exegesis of effect modification - biological or spurious?

Affiliations

Comment

K S Joseph. Paediatr Perinat Epidemiol. 2009 Sep.

. 2009 Sep;23(5):417-20; author reply 421-3.

doi: 10.1111/j.1365-3016.2009.01051.x.

¹ Department of Obstetrics and Gynaecology, Dalhousie University and the IWK Health Centre, Halifax, Nova Scotia, Canada. ksjoseph@cfri.ca

No abstract available

Comment on

Quantification of collider-stratification bias and the birthweight paradox.
Whitcomb BW, Schisterman EF, Perkins NJ, Platt RW. Whitcomb BW, et al. Paediatr Perinat Epidemiol. 2009 Sep;23(5):394-402. doi: 10.1111/j.1365-3016.2009.01053.x. Paediatr Perinat Epidemiol. 2009. PMID: 19689488 Free PMC article.
Z-scores and the birthweight paradox.
Schisterman EF, Whitcomb BW, Mumford SL, Platt RW. Schisterman EF, et al. Paediatr Perinat Epidemiol. 2009 Sep;23(5):403-13. doi: 10.1111/j.1365-3016.2009.01054.x. Paediatr Perinat Epidemiol. 2009. PMID: 19689489 Free PMC article.