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The relationship between smoking, quitting smoking and obesity in Australia: a seemingly unrelated probit approach


  • N. Au
  • K. Hauck
  • B. Hollingsworth


Smoking and obesity are two leading causes of preventable death. Further understanding of the relationship between these two risk factors can assist in reducing avoidable morbidity and mortality. This study investigates the empirical association between obesity and the propensity to smoke and to quit smoking, using a Seemingly Unrelated (SUR) probit approach that takes into consideration the potential for reverse causality and unobserved heterogeneity. Using Australian health survey data, this article demonstrates the usefulness of the SUR probit approach in generating information on the relationship between unobserved factors influencing both smoking behaviour and obesity, and in providing estimates of the conditional probabilities of each risk factor. Results suggest the two risk factors are not independent. The presence, size and direction of correlation between the unobserved factors are found to vary by smoking behaviour and by gender. Estimates of conditional probabilities demonstrate smokers have a lower probability of obesity, particularly among females, and ex-smokers have a higher probability of obesity, particularly among males. These findings suggest that health policies targeted at one risk factor may have unintended implications for the other.

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  • N. Au & K. Hauck & B. Hollingsworth, 2013. "The relationship between smoking, quitting smoking and obesity in Australia: a seemingly unrelated probit approach," Applied Economics, Taylor & Francis Journals, vol. 45(16), pages 2191-2199, June.
  • Handle: RePEc:taf:applec:45:y:2013:i:16:p:2191-2199
    DOI: 10.1080/00036846.2012.657353

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    References listed on IDEAS

    1. Kazuo Ogawa & Kazuyuki Suzuki, 2000. "Uncertainty and Investment: Some Evidence from the Panel Data of Japanese Manufacturing Firms," The Japanese Economic Review, Japanese Economic Association, vol. 51(2), pages 170-192, June.
    2. Ghosal, Vivek & Loungani, Prakash, 1996. "Product Market Competition and the Impact of Price Uncertainty on Investment: Some Evidence from US Manufacturing Industries," Journal of Industrial Economics, Wiley Blackwell, vol. 44(2), pages 217-228, June.
    3. Julián Messina & Giovanna Vallanti, 2007. "Job Flow Dynamics and Firing Restrictions: Evidence from Europe," Economic Journal, Royal Economic Society, vol. 117(521), pages 279-301, June.
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