利用2003—2019年中国地级市面板数据,采用控制方程法测度城市公共服务效率。基于“政务APP”推广的政策视角,构建时间异质性双重差分模型、广义双重差分模型和事件分析模型,以评估政务APP推广对于城市公共服务效率的影响。研究发现:推广政务APP能够提升地级市政府的公共服务效率,该结果通过了地区异质性、事件分析法和安慰剂检验。推广政务APP能够产生中介效应,即提升政府透明度和市场化程度,进而改善城市政务的公共服务效率。此外,其还能产生均等化效应,即缩小城市之间公共服务效率的差距。建议进一步完善政务APP的功能属性,促进政务APP与政府及企业的融合,着力推广国家级政务APP平台。
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