nep-dcm New Economics Papers
on Discrete Choice Models
Issue of 2011‒01‒03
two papers chosen by
Philip Yu
Hong Kong University

  1. Income Growth, Price Variation and Health Care Demand: A Mixed Logit Model Applied to Tow-period Comparison in Rural China By Yong HE; Jacky MATHONNAT; Martine AUDIBERT
  2. Commitment in intertemporal household consumption: a revealed preference analysis By Laurens CHERCHYE; Bram DE ROCK; Jeroen SABBE; Ewout VERRIEST

  1. By: Yong HE (Centre d'Etudes et de Recherches sur le Développement International); Jacky MATHONNAT (Centre d'Etudes et de Recherches sur le Développement International); Martine AUDIBERT (Centre d'Etudes et de Recherches sur le Développement International)
    Abstract: 1989-2006 is a period of the start and the end of deregulation of Chinese health care sector and of disintegration of rural cooperative insurance system. During this period, the government health policy has turned healthcare providers all alike into profit seeking entities. Face to perverse effects, by 2003, Chinese government begun to restore rural cooperative insurance system. From CHNS data source, we constitute two samples: 89-93 and 04-06 with respectively 2117 and 2594 rural patients surveyed roughly in the same villages in 9 Chinese provinces to compare their health choice behaviors with the evolution of price, income, distance, insurance, age, and regional inequality. Using Mixed Multinomial Logit (MMNL) estimations, we have obtained three main results. First, even in both periods there is clear price effect, in 04-06 it tends to be weaker, and heterogeneity in price preference has increased. This corresponds well the fact that between the two periods price level has significantly increased and price variation reduced. Second, there is a stronger negative distance effect and heterogeneity in 2004-06, while in 89-93 this negative impact was lower and absent for providers farther than 10km. One interpretation is the existence of a substitution effect: when patients have less possibility to discriminate providers by price, they increase their preference in choice by distance. Third, while, wealth effect exists in some choices in 89-93, it becomes absent in 04-06. Explanations may be that one the one hand both supply side and demand side conditions on health care have been improved even, to less extent though, for the poor, and on the other hand, health care is necessary goods and is price inelastic. But meanwhile, we observed catastrophic effect for the poor: the poorer patients have their share of consumption in income more decreased after health care.
    Keywords: Empirical approach, health care demand, mixed logit model, insurance, China
    JEL: C25 I18 I11
    Date: 2010
  2. By: Laurens CHERCHYE; Bram DE ROCK; Jeroen SABBE; Ewout VERRIEST
    Abstract: We present a revealed preference methodology for analyzing intertemporal household consumption behavior. In doing so, we follow a collective approach, which explicitly recognizes that multi-member households consist of multiple decision makers with their own rational preferences. Following original work of Mazzocco (2007), we develop tests that can empirically verify whether observed consumption behavior is consistent with (varying degrees of) intrahousehold commitment. In our set-up, commitment means that households choose consumption allocations on the ex ante Pareto frontier. The distinguishing feature of our tests is that they are entirely nonparametric, i.e. their implementation does not require an a priori (typically non-verifiable) specification of the intrahousehold decision process (e.g. individual utilities). We demonstrate the practical usefulness of our methodology by means of an empirical application. For the data at hand, our results suggest using a so-called limited commitment model that allows for household-specific commitment patterns. Importantly, our application also shows that bringing intertemporal dynamics in the empirical analysis can substantially increases the discriminatory power of the revealed preference methodology.
    Date: 2010–12

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