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Compared with non-Hispanic whites, a significantly lower prevalence of trisomy 21 was observed among non-Hispanic black and Hispanic pregnancies in the combined maternal age category (prevalence ratio [PR]?=?0.62, 95% confidence interval [CI] 0.53�C0.73 and PR?=?0.64, 95% CI 0.52�C0.8, respectively). Non-Hispanic black mothers aged [http://www.selleckchem.com/products/obeticholic-acid.html Obeticholic Acid manufacturer] prevalence of trisomy 21 among mothers 35 years and older did not vary significantly by maternal race�Cethnicity. The live birth prevalence of trisomy 21, and the live [http://en.wikipedia.org/wiki/FARP1 FARP1] birth prevalence adjusted for electively terminated trisomy 21 pregnancies, were calculated for each of the three race�Cethnicity subgroups (Table I). The live birth prevalence of trisomy 21 was significantly lower among non-Hispanic black mothers of all ages compared with non-Hispanic white mothers of all ages (PR?=?0.77, 95% CI 0.64�C0.93; Table I). When adjusted for elective termination, the live birth prevalence of trisomy 21 among both non-Hispanic black and among Hispanic mothers of all ages were statistically significantly lower compared with non-Hispanic white mothers (PR?=?0.64, 95% CI 0.54�C0.76, and PR?=?0.69, 95% CI 0.55�C0.86, respectively). Non-Hispanic black mothers aged [http://www.selleckchem.com/products/Adriamycin.html Selleckchem Doxorubicin] significantly less frequently among Hispanic women (Table II) compared with non-Hispanic white women (odds ratio [OR] 0.66, 95% CI 0.56�C0.78) using a multivariate logistic regression model to adjust for birth year and maternal age. In contrast, non-Hispanic black women underwent a similar frequency of prenatal cytogenetic testing (OR 0.95, 95% CI 0.87�C1.00). However, compared with non-Hispanic white women, both non-Hispanic black and Hispanic women were significantly less likely to undergo elective termination after an abnormal prenatal cytogenetic test result (OR 0.50, 95% CI 0.36�C0.70 and OR 0.49, 95% CI 0.27�C0.88, respectively). The outcomes of all pregnancies with defects and of those pregnancies affected by trisomy 21 were analyzed for the years 1996�C2005 by maternal race�Cethnicity (Table III).

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