Chaabouni Sami, Saidi Kais
Faculty of Economics and Management of Sfax, University of Sfax, Street of Airport, km 4.5, LP 1088, Sfax 3018, Tunisia.
Faculty of Economics and Management of Sfax, University of Sfax, Street of Airport, km 4.5, LP 1088, Sfax 3018, Tunisia.
Environ Res. 2017 Oct;158:137-144. doi: 10.1016/j.envres.2017.05.041. Epub 2017 Jun 15.
This document investigated the causal relationship between carbon dioxide (CO) emissions, health spending and GDP growth for 51 countries (divided into three groups of countries: low-income countries; group of countries with lower and upper middle income; group of middle income countries) covering the annual period 1995-2013. Dynamic simultaneous-equations models and generalized method of moments (GMM) are used to investigate this relationship. The main results provide evidence of a causal relationship between the three variables. The empirical results show that there is a bidirectional causality between CO emissions and GDP per capita, between health spending and economic growth for the three groups of estimates. The results also indicate that there is a unidirectional causality from CO emissions to health spending, except low income group countries. We found that health plays an important role in GDP per capita; it limits its effect on a growing deterioration in the quality of the environment.
本文研究了1995年至2013年期间51个国家(分为三组国家:低收入国家;中低收入和中高收入国家组;中等收入国家组)的二氧化碳(CO)排放、卫生支出与国内生产总值(GDP)增长之间的因果关系。采用动态联立方程模型和广义矩估计法(GMM)来研究这种关系。主要结果提供了这三个变量之间因果关系的证据。实证结果表明,在三组估计中,CO排放与人均GDP之间、卫生支出与经济增长之间存在双向因果关系。结果还表明,除低收入国家组外,从CO排放到卫生支出存在单向因果关系。我们发现,卫生在人均GDP中发挥着重要作用;它限制了其对环境质量日益恶化的影响。