Department of Agricultural Economics and Agribusiness, University of Arkansas, Fayetteville, Arkansas, United States of America.
International Trade and Development Branch of the Market and Trade Economics Division, USDA Economic Research Service (ERS), Kansas City, Missouri, United States of America.
PLoS One. 2022 Mar 31;17(3):e0264079. doi: 10.1371/journal.pone.0264079. eCollection 2022.
Empirical evidence on the responsiveness and sensitivities of food consumption to its drivers is vital for conducting economic studies. Despite recent attempts to provide such estimates, much empirical work remains to be done considering the prevailing shifts in consumption trends in the Philippines. Price and expenditure elasticities are estimated for seven food categories for rural and urban Filipino households, using Stone-Lewbel (SL) price indices and the quadratic almost-ideal demand system (QUAIDS) model. We used multiple years (2006, 2009, 2012, 2015, and 2018) of the Philippines Family Income and Expenditure Survey (FIES) to estimate the food demand system. The results show that rice is a normal good for most households, particularly for rural consumers. However, it is an inferior good for the top 30% of rural Filipinos and the top 40% of urban Filipinos. As income increases, such wealthy households tend to replace their rice-dominated diet with nutrient-dense food products. Female-headed households, younger households, and households with educated members consume significantly more animal proteins such as meat and dairy products.
对于进行经济研究而言,有关食物消费对其驱动因素的反应性和敏感性的经验证据至关重要。尽管最近有人试图提供此类估计,但考虑到菲律宾消费趋势的普遍转变,仍有许多实证工作要做。使用斯通-勒贝尔(SL)价格指数和二次近似理想需求系统(QUAIDS)模型,为农村和城市菲律宾家庭的七个食品类别估算了价格和支出弹性。我们使用了菲律宾家庭收入和支出调查(FIES)的多年数据(2006 年、2009 年、2012 年、2015 年和 2018 年)来估算食品需求系统。结果表明,大米对大多数家庭来说是一种正常商品,尤其是对农村消费者而言。但是,对于农村地区收入最高的 30%和城市地区收入最高的 40%的菲律宾人来说,大米是一种劣等商品。随着收入的增加,这些富裕家庭往往会用营养丰富的食品来替代以大米为主的饮食。女性户主家庭、年轻家庭和有受教育成员的家庭会显著增加肉类和奶制品等动物蛋白的消费。