Demand for Prepared Meals by U.S. Households
基于1987-88年NFCS数据，用Heckman两阶段法估计美国家庭对预制餐的需求，发现年轻、高学历、时间紧张的家庭更可能购买，收入弹性0.07-0.13，自身价格弹性-0.23至-0.66，预制餐与外出就餐互为替代品。
Abstract Using the 1987–88 NFCS, a Heckman two‐stage procedure was used to estimate the demand for prepared meals by U.S. households. Prepared meals were defined as those ready to eat and those ready to cook. Households headed by younger, more educated, and time‐constrained managers were more likely to purchase prepared meals. Income elasticities ranged from 0.07 to 0.13, while own‐price elasticities ranged from −0.23 to −0.66. Evidence exists to indicate that prepared meals and food‐away‐from‐home are substitutes. The presence of teenagers in a household is positively associated with expenditures of prepared meals.