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A Censored Quantile Regression Analysis of Vegetable Demand: The Effects of Changes in Prices and Total Expenditure

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  • Geir Wæhler Gustavsen
  • Kyrre Rickertsen

Abstract

Many diseases are linked to dietary behavior. One major diet‐related risk factor is a low consumption of vegetables. The consumption may be increased through public policies. The effects on vegetable purchases of either removing the value added tax on vegetables or a general income support are investigated. Adverse health effects are most serious in households consuming low quantities of vegetables. Therefore, the effects on high‐ and low‐consuming households are estimated by using quantile regressions (QRs). Since many households did not purchase any vegetable during each survey period, censored as well as ordinary QRs are used. Our results suggest that the effects of the policy variables differ in different parts of the conditional distribution of vegetable purchases. None of the proposed policy options is likely to substantially increase vegetable purchases among low‐consuming households. Bon nombre de maladies découlent des habitudes alimentaires. La faible consommation de légumes constitue un important facteur de risque liéà l'alimentation. Cette consommation pourrait être accrue par l'instauration de politiques gouvernementales. Nous avons examiné les effets de l'abolition de la taxe sur la valeur ajoutée ou d'un soutien du revenu sur les achats de légumes. Les effets néfastes sur la santé sont plus graves chez les ménages qui consomment de faibles quantités de légumes. Nous avons donc estimé les effets chez les ménages à forte et à faible consommation de légumes à l'aide de régressions par quantile. Comme de nombreux ménages n'ont pas acheté de légumes au cours des périodes sondées, nous avons utilisé des régressions par quantile censurées et des régressions par quantile ordinaires. Nos résultats ont indiqué que les effets des variables concernant les politiques diffèrent dans différentes parties de la distribution conditionnelle des achats de légumes. Aucune des options politiques proposées ne semble susceptible d'accroître substantiellement les achats de légumes chez les ménages qui en consomment peu.

Suggested Citation

  • Geir Wæhler Gustavsen & Kyrre Rickertsen, 2006. "A Censored Quantile Regression Analysis of Vegetable Demand: The Effects of Changes in Prices and Total Expenditure," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 54(4), pages 631-645, December.
    • Handle: RePEc:bla:canjag:v:54:y:2006:i:4:p:631-645
    DOI: 10.1111/j.1744-7976.2006.00070.x
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    1. Gustavsen, Geir Wæhler & Rickertsen, Kyrre, 2013. "Adjusting VAT rates to promote healthier diets in Norway: A censored quantile regression approach," Food Policy, Elsevier, vol. 42(C), pages 88-95.
    2. Mousumi Das, 2014. "Measures, spatial profile and determinants of dietary diversity: Evidence from India," Indira Gandhi Institute of Development Research, Mumbai Working Papers 2014-045, Indira Gandhi Institute of Development Research, Mumbai, India.
    3. Kang Ernest Liu & Hung‐Hao Chang & Wen S. Chern, 2011. "Examining changes in fresh fruit and vegetable consumption over time and across regions in urban China," China Agricultural Economic Review, Emerald Group Publishing Limited, vol. 3(3), pages 276-296, September.
    4. Len Gill & Simon Rudkin, 2014. "Deconstructing Supermarket Intervention Effects on Fruit and Vegetable Consumption in Areas of Limited Retail Access: Evidence from the Seacroft Study," Environment and Planning A, , vol. 46(3), pages 649-665, March.
    5. Bannor, Richard Kwasi & Ros-Tonen, Mirjam A.F. & Mensah, Princess Ophelia & Derkyi, Mercy & Nassah, Valerie Fumey, 2021. "Entrepreneurial behaviour among non-timber forest product-growing farmers in Ghana: An analysis in support of a reforestation policy," Forest Policy and Economics, Elsevier, vol. 122(C).
    6. Ferrier, Peyton M. & Zhen, Chen, 2017. "The Role of Income in Explaining the Shift from Preserved to Fresh Vegetable Purchases," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 42(3), September.
    7. Stéphan Marette & Jutta Roosen & Sandrine Blanchemanche, 2008. "Taxes and subsidies to change eating habits when information is not enough: an application to fish consumption," Journal of Regulatory Economics, Springer, vol. 34(2), pages 119-143, October.
    8. Dave Weatherspoon & James Oehmke & Assa Dembele & Lorraine Weatherspoon, 2015. "Fresh vegetable demand behaviour in an urban food desert," Urban Studies, Urban Studies Journal Limited, vol. 52(5), pages 960-979, April.
    9. Hayden Stewart & Noel Blisard, 2008. "Are Younger Cohorts Demanding Less Fresh Vegetables?," Review of Agricultural Economics, Agricultural and Applied Economics Association, vol. 30(1), pages 43-60.
    10. Stewart, Hayden & Dong, Diansheng, 2018. "The Relationship Between Patronizing Direct-to-Consumer Outlets and a Household’s Demand for Fruits and Vegetables," Economic Research Report 276254, United States Department of Agriculture, Economic Research Service.
    11. Salois, Matthew & Tiffin, Richard & Balcombe, Kelvin, 2010. "Calorie and Nutrient Consumption as a Function of Income: A Cross-Country Analysis," MPRA Paper 24726, University Library of Munich, Germany.
    12. Yen, Steven T. & Tan, Andrew K.G., 2011. "Fruit and vegetable consumption in Malaysia: a count system approach," 2011 International Congress, August 30-September 2, 2011, Zurich, Switzerland 115969, European Association of Agricultural Economists.
    13. Weatherspoon, Dave D. & Dembele, Assa S. & Weatherspoon, Lorraine J. & Coleman, Marcus A. & Oehmke, James F., 2012. "Price and Expenditure Elasticities for Vegetables in an Urban Food Desert," 2012 AAEA/EAAE Food Environment Symposium 123392, Agricultural and Applied Economics Association.
    14. Gustavsen, Geir Waehler & Jolliffe, Dean & Rickertsen, Kyrre, 2008. "Censored Quantile Regression and Purchases of Ice Cream," 2008 Annual Meeting, July 27-29, 2008, Orlando, Florida 6534, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    15. Madhavan-Nambiar, Padmanand & Florkowski, Wojciech & Chinnan, Manjeet & Ressurrecion, Anna, 2014. "Factors Driving Fruit and Vegetable Expenditures and Consumption Frequency in Lesser Developed Country: an Analysis of Urban Households from the Republic of Uganda," 2014 Annual Meeting, February 1-4, 2014, Dallas, Texas 162414, Southern Agricultural Economics Association.
    16. Yen, Steven T. & Tan, Andrew K.G. & Nayga, Rodolfo M. Jr, 2011. "Determinants of fruit and vegetable consumption in Malaysia: an ordinal system approach," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 55(2), pages 1-18.
    17. Bakhshoodeh, M., 2010. "Impacts of world prices transmission to domestic rice markets in rural Iran," Food Policy, Elsevier, vol. 35(1), pages 12-19, February.
    18. Geir Wæhler Gustavsen & Kyrre Rickertsen, 2009. "The effects of taxes on purchases of sugar-sweetened carbonated soft drinks: a quantile regression approach," Applied Economics, Taylor & Francis Journals, vol. 43(6), pages 707-716.
    19. Steven Yen & Andrew Tan, 2012. "Who are eating and not eating fruits and vegetables in Malaysia?," International Journal of Public Health, Springer;Swiss School of Public Health (SSPH+), vol. 57(6), pages 945-951, December.
    20. Tan, Andrew K. G. & Yen, Steven T. & Hasan, Abdul Rahman & Muhamed, Kamarudin, 2014. "Household Expenditures on Vegetables in Malaysia," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 46(4), pages 1-19, November.

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