Bhalotra, Sonia and Clarke, Damian (2018) 'Twin Birth and Maternal Condition.' Review of Economics and Statistics, 101 (5). ISSN 0034-6535

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Abstract

Twin births are often construed as a natural experiment in the social and natural sciences on the premise that the occurrence of twins is quasi-random. We present population-level evidence that challenges this premise. Using individual data for 17 million births in 72 countries, we demonstrate that indicators of mother’s health, healthrelated behaviours and the prenatal environment are systematically positively associated with twin birth. The associations are sizeable, evident in richer and poorer countries, evident even among women who do not use IVF, and hold for numerous different measures of health. We discuss potential mechanisms, showing evidence that favours selective miscarriage.

Item Type:	Article
Uncontrolled Keywords:	Twins; maternal health; miscarriage; fertility; parental investment; women’s labor supply
Subjects:	H Social Sciences > H Social Sciences (General)
Divisions:	Faculty of Social Sciences > Economics, Department of
Depositing User:	Elements
Date Deposited:	15 Jan 2019 17:17
Last Modified:	27 Nov 2019 15:15
URI:	http://repository.essex.ac.uk/id/eprint/23799

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