Wagstaff A
J Health Econ. 1986 Sep;5(3):195-233. doi: 10.1016/0167-6296(86)90015-9.
This paper presents some new estimates of the 'pure investment' and 'pure consumption' models of the demand for health. In contrast to previous studies, the paper presents parameter estimates of both reduced-form and structural demand for health care equations. The latter--which are obtained by treating health capital as a latent variable in a recursive equation system--provide a safer way of checking the consistency of the model's predictions with the data. The present analysis of the pure consumption model differs from previous analyses in its recognition of the dependency of the shadow price of initial assets on the entire lifetime profiles of the model's exogenous variables. The paper also explores the implications in terms of reliability of parameter estimates of the failure on the part of previous studies to recognize this.
本文给出了健康需求的“纯投资”和“纯消费”模型的一些新估计。与以往研究不同的是，本文给出了医疗保健需求方程的简化形式和结构形式的参数估计。后者是通过在递归方程系统中将健康资本视为一个潜在变量而得到的，它为检验模型预测与数据的一致性提供了一种更可靠的方法。本文对纯消费模型的分析与以往分析的不同之处在于，它认识到初始资产影子价格取决于模型外生变量的整个生命周期分布。本文还探讨了以往研究未能认识到这一点对参数估计可靠性的影响。
