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Activity Number: 247 - Causal Inference and Statistical Learning of Intervention and Policy Effects
Type: Contributed
Date/Time: Wednesday, August 11, 2021 : 10:00 AM to 11:50 AM
Sponsor: Health Policy Statistics Section
Abstract #318373
Title: How Did the Timothy’s Law Impact Hospitalization Among Mental Patients in New York State? A Causal Approach to a Mental Disparity Policy
Author(s): Mingfei Li* and Victor S.Y. Lo and Piaomu Liu and Eric Smith
Companies: Bentley University and Fidelity Investments and Bentley University and Center for Healthcare Organization and Implementation Research, VA Bedford Hospital
Keywords: policy evaluation; PS-DID; mental disparity

There is a consistent effort to study and evaluate the impact of a health policy on different stakeholders. New York State passed Timothy’s law to improve the mental disparity and provide more support to patients with certain mental diseases and not eligible for Medicaid and Medicare in Jan 2007. This law requires many insurance companies to provide coverage on most of the mental illness. The law became permanent later in 2009. Although there was an evaluation of this policy on the cost side by the New York State Insurance Department in 2009, there is lack of studies on its impact on patients’ health outcomes, such as care utilization. In this study, we will use a hybrid of propensity score method and Difference-in-Differences method to evaluate the causal effect of Timothy’s Law on inpatient visits of mental patients. The Healthcare Cost and Utilization Project (HCUP) state inpatient data between 2006 and 2007 was used. Considering the comparability in characteristics economically and politically, California was chosen to be the control group at the same time frame. In this presentation, we will introduce the motivation, the analysis, and the result of this study.

Authors who are presenting talks have a * after their name.

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