Data for: Assessing the Sustainability of High-, Middle-, and Low-Income Countries: A Network DEA Model in the Presence of both Zero Data and Undesirable Outputs

4.1. Data and variables This research covers an economic analysis of 97 developed and developing (25 high-income, 53 middle-income, and 19 low-income) countries in the world in the context of sustainability. For a sustainability measurement of the countries, we first developed a two-stage structure. The first stage indicates sustainable production and the second stage indicates sustainable economic distribution. Then, we applied our network DEA model for measuring efficiency both in the sustainable production stage and in the sustainable distribution stage for each country.4.1 数据与变量 本研究针对全球97个发达国家与发展中国家（含25个高收入、53个中等收入及19个低收入经济体）开展可持续发展视角下的经济分析。为对各国进行可持续性评估，本研究首先构建了两阶段分析框架：第一阶段表征可持续生产，第二阶段表征可持续经济分配。随后，本研究运用所提出的网络数据包络分析（Data Envelopment Analysis, DEA）模型，对各国可持续生产阶段与可持续分配阶段的效率分别进行测算。