At‐Home Consumption of Cheese: A Purchase‐Infrequency Model
利用1987年消费者支出调查数据，估计了一个奶酪购买频率模型，处理了调查期内零购买但实际有消费的问题，并检验了Tobit模型及两阶段支出决策独立性假设的适用性。
Abstract For many commodities, zero purchases are recorded in household budget surveys even though positive consumption occurs. This may reflect a survey period that is shorter than the purchase cycle. The present study estimates a purchase‐infrequency model for cheese using the 1987 BLS Consumer Expenditure Survey. Appropriateness of the Tobit specification is examined along with the assumption of independence of the two‐stage expenditure decision process.