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Table 1 Digital economy index system and its weight

From: Impact of digital economic development and environmental pollution on residents’ health: an empirical analysis based on 279 prefecture-level cities in China

Secondary indexes

Three-level indexes

Weight

Digital infrastructure

Number of mobile phone users (per 10,000 people)

0.1892

Digital output

Telecom business volume (yuan)

0.1988

Digitalization application

Number of Internet broadband access users (per 10,000 households)

0.1943

Digital industry development

Number of employees in information service industry (person)

0.3603

Digital inclusive financial index

Peking University Digital Inclusive Finance Index

0.0574