Is the health care price inflation in US urban areas stationary? Evidence from panel unit root tests

• Autores: Murthy, Vasudeva, Okunade, Albert
• Formato: artículo
• Fecha de Publicación: 2018
• Institución: Universidad ESAN
• Repositorio: Revistas - Universidad ESAN
• Lenguaje: inglés
• OAI Identifier: oai:ojs.pkp.sfu.ca:article/113
• Enlace del recurso: https://revistas.esan.edu.pe/index.php/jefas/article/view/113
• Nivel de acceso: acceso abierto
• Materia: Cross-sectional dependence; Health-care price inflation rate; Multiple structural breaks; Panel unit root tests

Purpose. This study aims to investigate, for the first time in the literature, the stochastic properties of the US aggregate health-care price inflation rate series, using the data on health-care inflation rates for a panel of 17 major US urban areas for the period 1966-2006. Design/methodology/approach. This goal is undertaken by applying the first- and second-generation panel unit root tests and the panel stationary test developed recently by Carrion-i-Silvestre et al. (2005) that allows for endogenously determined multiple structural breaks and is flexible enough to control for the presence of cross-sectional dependence. Findings. The empirical findings indicate that after controlling for the presence of cross-sectional dependence, finite sample bias, and asymptotic normality, the US aggregate health-care price inflation rate series can be characterized as a non-stationary process and not as a regime-wise stationary innovation process. Research limitations/implications. The research findings apply to understanding of health-care sector price escalation in US urban areas. These findings have timely implications for the understanding of the data structure and, therefore, constructs of economic models of urban health-care price inflation rates. The results confirming the presence of a unit root indicating a high degree of inflationary persistence in the health sector suggests need for further studies on health-care inflation rate persistence using the alternative measures of persistence. This study’s conclusions do not apply to non-urban areas. Practical implications. The mean and variance of US urban health-care inflation rate are not constant. Therefore, insurers and policy rate setters need good understanding of the interplay of the various factors driving the explosive health-care insurance rates over the large US metropolitan landscape. The study findings have implications for health-care insurance premium rate setting, health-care inflation econometric modeling and forecasting. Social implications. Payers (private and public employers) of health-care insurance rates in US urban areas should evaluate the value of benefits received in relation to the skyrocketing rise of health-care insurance premiums. Originality/value. This is the first empirical research focusing on the shape of urban health-care inflation rates in the USA.  Doi: https://doi.org/10.1108/JEFAS-02-2017-0043