University of Tehran Iranian Journal of Agricultural Economics and Development Research 2008-4838 45 3 2014 09 23 Analyzing food demand in Iran: Application of demand system models Analyzing food demand in Iran: Application of demand system models 545 554 53171 10.22059/ijaedr.2014.53171 FA Javad Hosseinzad Associate Professor, Agricultural Economics, University of Tabriz, Iran 0000-0002-7023-2355 Fateme Sohrabi Athar MSc., Agricultural Economics, University of Tabriz, Iran Ghader Dashti Associate Professor, Agricultural Economics, University of Tabriz, Iran Mohamad Ghahremen Zade Associate Professor, Agricultural Economics, University of Tabriz, Iran Journal Article 2011 05 18 In this study the consumption behavior of Iranian urban households is analyzed for the eight main food commodities groups including cereal and its products, meat, milk and its products and eggs, fruits and vegetables, edible oils and butter, beverages, grains and nuts over 1974-2007. In this context, the flexible demand models such as Quadratic Expenditure, Rotterdam, Almost Ideal Demand System, Quadratic Almost Ideal Demand System, Inverse Almost Ideal Demand System (IADS) and CBS were estimated by seemingly unrelated regressions. Based on comparing the statistical tests and econometric criteria, the IADS was selected as the best model. Results showed that among the food items, dairly and meat have the least and highest quantity elasticity, respectively. The scale elasticities of meat and nuts were lower than those of other groups, which suggest that these goods are being luxurious. The results imply that there is a substitute relationship between meat and cereal, and also milk and other beverages. Furthermore, cereal has a complementary relationship with nut and oil. In this study the consumption behavior of Iranian urban households is analyzed for the eight main food commodities groups including cereal and its products, meat, milk and its products and eggs, fruits and vegetables, edible oils and butter, beverages, grains and nuts over 1974-2007. In this context, the flexible demand models such as Quadratic Expenditure, Rotterdam, Almost Ideal Demand System, Quadratic Almost Ideal Demand System, Inverse Almost Ideal Demand System (IADS) and CBS were estimated by seemingly unrelated regressions. Based on comparing the statistical tests and econometric criteria, the IADS was selected as the best model. Results showed that among the food items, dairly and meat have the least and highest quantity elasticity, respectively. The scale elasticities of meat and nuts were lower than those of other groups, which suggest that these goods are being luxurious. The results imply that there is a substitute relationship between meat and cereal, and also milk and other beverages. Furthermore, cereal has a complementary relationship with nut and oil. https://ijaedr.ut.ac.ir/article_53171_16f1ac6b8313bfc79b4faa923403b978.pdf