Impacts of international transport infrastructure: evidence from Laos households
Impacts of international transport infrastructure: evidence from Laos households
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发表时间：
2018
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通讯作者：
M. Andersson;Hayakawa Kazunobu;S. Keola;Yamanouchi Kenta
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作者：
M. Andersson;Hayakawa Kazunobu;S. Keola;Yamanouchi Kenta
本研究调查了国际交通基础设施对家庭生活水平的影响。我们认为，食品支出占总支出比例的变化是发展中国家基础设施改善生活水平的有效指标。我们将这一概念应用于老挝和泰国之间的国际桥梁案例，并探讨其对老挝家庭的影响。我们通过双重差分分析和倾向得分匹配法得出的估计结果表明，修建国际桥梁降低了食品支出的份额，这表明桥梁附近家庭的生活水平得到了提高。我们的主要结果对于替代治疗测量是稳健的。最后，我们使用机器学习方法探讨了治疗效果的异质性。我们发现，虽然总支出的初始水平影响了家庭从桥梁中受益的能力，但所有家庭，无论其特征如何，如果位于靠近大桥的地区，都可以受益。
This study investigates the impact of international transport infrastructure on household living standards. We propose that a change in the share of food expenditure to total expenditure is a valid indicator of the improvement in living standards by infrastructure in developing countries. We apply this notion to the case of an international bridge between Laos and Thailand and explore its effects on Laos households. Our estimation results by difference-in-differences analysis and propensity score matching method show that establishing an international bridge decreases the share of food expenditure, suggesting that the living standards of the households close to the bridge were improved. Our main results are robust to alternative treatment measurements. Finally, we explored the heterogeneity of the treatment effects using a machine learning approach. We found that although the initial level of the total expenditure affected households’ ability to benefit from the bridge, all households, regardless of their characteristics, could benefit if they were in the districts close to the