Study finds natural variation in sex ratios at birth and sex ratio inflation in 12 countries

(University of Massachusetts at Amherst) An international team of researchers, led by UMass Amherst biostatistician Leontine Alkema and her former Ph.D. student Fengqing Chao, developed a new estimation method for assessing natural variations in the sex ratio at birth (SRB) for all countries in the world.

from EurekAlert! - Social and Behavioral Science http://bit.ly/2IvqqYq