Estimation of Insurance Deductible Demand Under Endogenous Premium Rates
研究了政府补贴保险市场中，因保费与免赔额内生关联导致标准估计有偏的问题，提出新识别策略，并基于美国联邦农作物保险数据发现需求弹性较大，纠正了以往认为需求缺乏弹性的结论。
Abstract Government‐subsidized insurance is ubiquitous, yet estimation of demand in such markets remains challenging. The premium charged for a given deductible is determined by actuarial construction; thus, observed choice‐pairs are endogenous leading to biased estimation under standard econometric approaches. A theoretical model and simulation study are developed, and a new identification strategy proposed. An empirical application using Federal Crop Insurance Program—a $100 billion/year program—data reveals that demand is quite elastic after accounting for this endogeneity. Mistreatment of such endogeneity is likely partly responsible for pervasive faulty findings of inelastic insurance demand in related applications. Policy implications are also discussed.