Ray and colleagues1 present data on variation in birth sex ratios among Ontario newborns, showing a significant male-biased sex ratio at birth among multiparous Indian and South Korean mothers. The ...

A stock's price-to-earnings ratio, or P/E ratio, is an expression of how expensive a stock is relative to the profits generated by the underlying company. Because of factors such as risk and growth ...

This is a preview. Log in through your library . Abstract We investigated the effects of maternal weight and age and density of breeding females on sex ratio (percentage of males) in litters of wild ...

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 ...

Cancer Causes & Control, Vol. 26, No. 5, Special Issue: Breast and Cervical Cancer Early Detection Program (May 2015), pp. 689-695, 697 (8 pages) Purpose: There is substantial variation across the ...

Biostatisticians have developed a new estimation method for assessing natural variations in the sex ratio at birth (SRB) for all countries in the world. An international team of researchers, led by ...