Dataset Description: Panel Data of Digital Infrastructure and Regional Economic Integration in the Yangtze River Delta Region (2013-2022)

Main Variables Dataset.xlsx: 2013-2022 panel data of 41 Yangtze River Delta cities (410 observations, no missing values), including core variables (digital_infra, integration_level) and 7 control variables (urban_rate, gov_intervention, etc.).
Indicators and Scores of Digital Infrastructure.xlsx: 410 rows of data covering 6 secondary indicators (X1-X6), composite scores (digital_infra) and standardized scores (stand_digital_infra), enabling traceability of digital infrastructure calculation.
Indicators and Scores of Regional Economic Integration.xlsx: 409 rows of raw data on 21 basic indicators (regional GDP, fixed asset investment, fiscal revenue/expenditure, etc.) to support measuring regional economic integration.
Indicators and Scores of Controlled Variable.xlsx: 410 rows of raw/standardized control variables (population, core_dummy, etc.), consistent with the main dataset in time and regional scope.