Assortative mating on blood type: Evidence from one million Chinese pregnancies.

Hou, Yao; Tang, Ke; Wang, Jingyuan; Xie, Danxia; Zhang, Hanzhe · Proc Natl Acad Sci U S A · 2022

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Abstract

Blood type is one of the most fundamental phenotypes in biological, medical, and psychological studies. Using a unique dataset of one million Chinese pregnancies, we find strong evidence from a group of statistical tests for assortative mating on blood type. After controlling for anthropometric and socioeconomic confounders, assortative mating remains robust.

Medical subject headings