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Maternal smoking during pregnancy and early child outcomes

Tominey, E.; (2007) Maternal smoking during pregnancy and early child outcomes. (CEP Discussion Papers CEPDP8). Centre for Economic Performance (CEP), The London School of Economics and Political Science (LSE): London, UK. Green open access

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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.

Type: Working / discussion paper
Title: Maternal smoking during pregnancy and early child outcomes
ISBN-13: 9780853280910
Open access status: An open access version is available from UCL Discovery
Publisher version: http://cep.lse.ac.uk/_new/publications/abstract.as...
Language: English
Additional information: Centre for Economic Performance, London School of Economics, Houghton Street, London, WC2A 2AE
Keywords: Smoking, pregnancy, child health, birth weight
UCL classification: UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Economics
URI: https://discovery.ucl.ac.uk/id/eprint/18623
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