Table 2.

Selection of indicators for the digital technology development index.

	Variable name	Measurement method
Digital technology comprehensive development	Digital basic resources	Mobile phone penetration rate
		Number of Internet broadband access ports
		Length of long-distance fiber-optic cable lines
		Number of Internet domain names
	Digital technology support	Breadth of digital financial coverage
		Depth of digital financial usage
		Digital finance digitization level
		Level of online mobile payment
	Digital innovation potential	Internal expenditure on R&D funding
		R&D personnel full-time equivalent
		Number of patents granted
		R&D intensity