Couples' urinary bisphenol A and phthalate metabolite concentrations and the secondary sex ratio.

ABSTRACT: With limited research focusing on non-persistent chemicals as exogenous factors affecting human sex selection, this study aimed to evaluate the association of urinary bisphenol A (BPA) and phthalate metabolite concentrations with the secondary sex ratio (SSR), defined as the ratio of male to female live births. The current analysis is limited to singleton live births (n=220, 43.9%) from the Longitudinal Investigation of Fertility and the Environment (LIFE) Study, in which couples discontinuing contraception with the intention of becoming pregnant were enrolled and followed while trying for pregnancy and through delivery for those achieving pregnancy. Using modified Poisson regression models accounting for potential confounders, we estimated the relative risks (RRs) of a male birth per stan

SUBMITTER: Bae J 

PROVIDER: S-EPMC4355045 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature