New estimates of the demand for physical and mental health treatment
利用1996-2003年面板数据，通过零膨胀有序probit模型估计身心健康治疗的需求价格弹性，发现心理治疗的价格敏感性已大幅下降，略低于身体治疗，而处方药需求更具弹性。
Consumers' price responsiveness is central to US health-care reform proposals, but the best available estimates are now more than 25 years old. We estimate health-care demands by calculating expected end-of-year prices and incorporating them into a zero-inflated ordered probit model applied to several overlapping panels of data from 1996 to 2003. Results from our correlated random effects specification indicate that the price responsiveness of ambulatory mental health treatment has decreased substantially and is now slightly lower than physical health treatment. This suggests that concerns over moral hazard alone do not warrant less generous coverage for mental health. However, prescription drug demand is more price elastic.