[Retracted] Regional Variation in the Carbon Dioxide Emission Efficiency of Construction Industry in China: Based on the Three-Stage DEA Model

Table 3

Variables influencing the carbon dioxide emission efficiency of construction industry.

Type of variables	Variable	Explain
	Production per carbon dioxide emissions	GDP/carbon dioxide emissions of construction industry
Output	Floor space under construction	Housing construction area of construction projects under construction during the reporting period
	Labor force	Employees in the construction enterprises
Input	Capital	The assets of construction enterprises
	Technical equipment	Total capacity of machinery and equipment owned by construction enterprises
	Per capita GDP	GDP/total population
Environment	Industrial structure	GDP of construction industry/GDP
	Urbanization	Urban population/total population