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Maternal Smoking During Pregnancy and Early Child Outcomes

  • Emma Tominey

We estimate the harm from smoking during pregnancy upon child birth outcomes, using a rich dataset on a cohort of mothers and their births. We exploit a fixed effects approach to disentangle the correlation between smoking and birth weight from the causal effect. We find that, despite a detailed set of controls for maternal traits, around one-third of the harm from smoking is explained by unobservable traits of the mother. Smoking tends to reduce birth weight by 1.7%, but has no significant effect on the probability of having a low birth weight child, pre-term gestation or weeks of gestation. Exploring heterogeneity in the effect on birth weight, it is mothers who smoke for the 9 months of gestation that suffer the harm, whereas there is an insignificant effect for mothers who chose to quit by month 5. Additionally, there is evidence of potential complementarity in investment of human capital, as the impact on birth weight of smoking is much greater for low educated mothers, even controlling for the quantity of cigarettes they smoke. We suggest policy should target the low educated mothers, offering a more holistic approach to improving child health, as quitting smoking is only half of the battle.

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Paper provided by Centre for Economic Performance, LSE in its series CEP Discussion Papers with number dp0828.

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Date of creation: Oct 2007
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Handle: RePEc:cep:cepdps:dp0828
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  12. William N. Evans & Jeanne S. Ringel, 1997. "Can Higher Cigarette Taxes Improve Birth Outcomes?," NBER Working Papers 5998, National Bureau of Economic Research, Inc.
  13. David A. Wise, 2009. "Developments in the Economics of Aging," NBER Books, National Bureau of Economic Research, Inc, number wise09-1, December.
  14. Currie, Alison & Shields, Michael A. & Price, Stephen Wheatley, 2007. "The child health/family income gradient: Evidence from England," Journal of Health Economics, Elsevier, vol. 26(2), pages 213-232, March.
  15. Jere R. Behrman & Mark R. Rosenzweig, 2004. "Returns to Birthweight," The Review of Economics and Statistics, MIT Press, vol. 86(2), pages 586-601, May.
  16. Burdett, Kenneth & Coles, Melvyn G, 1999. "Long-Term Partnership Formation: Marriage and Employment," Economic Journal, Royal Economic Society, vol. 109(456), pages F307-34, June.
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