Article(id=1148001303118213658, tenantId=1146029695717560320, journalId=1146120045056339983, issueId=1147991611725836402, articleNumber=1002-980X(2025)05-0014-14, orderNo=null, doi=10.12404/j.issn.1002-980X.J25021501, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1739548800000, receivedDateStr=2025-02-15, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1751634439496, onlineDateStr=2025-07-04, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1751634439496, onlineIssueDateStr=2025-07-04, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1751634439493, creator=13701087609, updateTime=1751634439493, updator=13701087609, issue=Issue{id=1147991611725836402, tenantId=1146029695717560320, journalId=1146120045056339983, year='2025', volume='44', issue='5', pageStart='1', pageEnd='136', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1751632128877, creator=13701087609, updateTime=1758090412483, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1175079616504021893, tenantId=1146029695717560320, journalId=1146120045056339983, issueId=1147991611725836402, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1175079616504021894, tenantId=1146029695717560320, journalId=1146120045056339983, issueId=1147991611725836402, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=14, endPage=27, ext={EN=ArticleExt(id=1148001303281791516, articleId=1148001303118213658, tenantId=1146029695717560320, journalId=1146120045056339983, language=EN, title=Does Innovation Policy Drive Urban Industrial Upgrading? Evidence from Multi-period DID, columnId=1149284496668709835, journalTitle=Journal of Technology Economics, columnName=Industrial Technology Economics, runingTitle=null, highlight=null, articleAbstract=
Under the increasingly urgent background of global economic transformation, upgrading, and innovation-driven high-quality development, exploring how innovation-driven policies facilitate the optimization and upgrading of urban industrial structures has become crucial for realizing Chinese-style modernization and advancing the development of new productive forces tailored to local conditions. The pilot policy of innovative cities in China was treated as a quasi-natural experiment. Panel data from 281 prefecture-level cities between 2006 and 2019 were utilized, and a multi-period difference-in-differences (DID) model was employed to evaluate the policy's impact on urban industrial restructuring. The results indicate that the innovative city pilot policy significantly promotes the sophistication of urban industrial structures, while its effect on industrial structure rationalization remains statistically insignificant. These findings are validated through a series of robustness tests. Heterogeneity analysis reveals more pronounced policy effects in cities with higher administrative levels, greater proportions of tertiary industry employment, development models not fully reliant on resource endowments, and those located within urban agglomeration economic belts. Mechanism analysis further demonstrates that the policy positively affects industrial structure sophistication through three channels: expanding the digital economy scale, optimizing resource allocation efficiency, and enhancing human capital supply. It empirically reveals the pathway through which innovation policies promote industrial structure optimization, providing both theoretical foundations and practical references for enhancing policy effectiveness and advancing high-quality regional economic development.
, correspAuthors=Muci Yan, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Xiaoping Li, Jie Quan, Muci Yan), CN=ArticleExt(id=1148001304653328966, articleId=1148001303118213658, tenantId=1146029695717560320, journalId=1146120045056339983, language=CN, title=创新政策是否驱动城市产业升级——基于多时点双重差分法的验证, columnId=1148001302568759830, journalTitle=技术经济, columnName=产业技术经济, runingTitle=null, highlight=null, articleAbstract=在全球经济转型升级和创新驱动高质量发展日益迫切的背景下,探讨创新驱动政策如何牵引城市产业结构的优化和升级,是切实实现中国式现代化和推进因地制宜发展新质生产力进程中的关键问题。本文将中国创新型城市试点政策作为一项准自然实验,利用2006—2019年281个地级市的面板数据,基于多时点双重差分模型,评估了该政策对城市产业结构调整的影响。结果发现:①创新型城市试点政策显著推动了城市产业结构的高度化,但对产业结构合理化的作用并不显著。这一结论通过了一系列稳健性检验。②异质性分析表明,政策效应在行政级别较高的城市、第三产业就业人数比重较高的城市、经济发展模式不完全依赖资源禀赋的城市及位于城市群经济带的城市中更为显著,更易实现产业结构高度化调整。③机制分析进一步表明,该政策通过扩大数字经济规模、优化资源配置效率及提升人力资本供给,对城市产业结构高度化产生了显著的正向作用。研究结论从实证角度揭示了创新政策对产业结构优化的作用路径,并为提升政策施行效果、促进区域经济高质量发展提供了理论依据和实践参考。, correspAuthors=严慕慈, authorNote=null, correspAuthorsNote=
严慕慈(1994—),中南大学商学院博士研究生,研究方向:产业经济。
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李晓萍(1978—),博士,中南大学商学院教授,博士研究生导师,研究方向:产业经济、区域经济;
全杰(1998—),中南大学商学院硕士研究生,研究方向:区域经济;
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李晓萍(1978—),博士,中南大学商学院教授,博士研究生导师,研究方向:产业经济、区域经济;
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全杰(1998—),中南大学商学院硕士研究生,研究方向:区域经济;
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全杰(1998—),中南大学商学院硕士研究生,研究方向:区域经济;
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37(5): 62-72., articleTitle=土地价格扭曲影响城市绿色全要素生产率研究——基于绿色创新能力视角, refAbstract=null), Reference(id=1175092796567470992, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, doi=null, pmid=null, pmcid=null, year=2022, volume=null, issue=5, pageStart=100, pageEnd=120, url=null, language=null, rfNumber=[40], rfOrder=39, authorNames=江艇, journalName=中国工业经济, refType=null, unstructuredReference=江艇. 因果推断经验研究中的中介效应与调节效应[J].
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49(7): 67-80., articleTitle=融资约束与人力资本积累——公共教育投资的作用, refAbstract=null)], funds=[Fund(id=1175092792914232167, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, awardId=72173138, language=CN, fundingSource=国家自然科学基金面上项目“中国产业政策与竞争政策协同的理论基础与实施路径研究”(72173138), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1175092789470708538, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, xref=null, ext=[AuthorCompanyExt(id=1175092789487485755, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, companyId=1175092789470708538, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Business, Central South University, Changsha 410017, China), AuthorCompanyExt(id=1175092789495874364, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, companyId=1175092789470708538, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中南大学商学院, 长沙 410017)])], figs=[ArticleFig(id=1175092791253287765, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=+wrxXMnG1mJhOxchgWgeFA==, figureFileBig=ZsvCEleMCZIoO0uWnCV4Yw==, tableContent=null), ArticleFig(id=1175092791324590934, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=图1, caption=
作用机制, figureFileSmall=+wrxXMnG1mJhOxchgWgeFA==, figureFileBig=ZsvCEleMCZIoO0uWnCV4Yw==, tableContent=null), ArticleFig(id=1175092791370728279, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=DcjsXC5sjwSGA7v4DTWSVA==, figureFileBig=5WOm/P2YLnuxaLVeOCzWqg==, tableContent=null), ArticleFig(id=1175092791416865624, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=图2, caption=
平行趋势检验, figureFileSmall=DcjsXC5sjwSGA7v4DTWSVA==, figureFileBig=5WOm/P2YLnuxaLVeOCzWqg==, tableContent=null), ArticleFig(id=1175092791488168793, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=1RwVq7mz5epM96cAYCNcpQ==, figureFileBig=riR1Oy7XM8FmFNeasFpzAw==, tableContent=null), ArticleFig(id=1175092791538500442, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=图3, caption=
安慰剂检验, figureFileSmall=1RwVq7mz5epM96cAYCNcpQ==, figureFileBig=riR1Oy7XM8FmFNeasFpzAw==, tableContent=null), ArticleFig(id=1175092791597220699, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量类型 | 变量 | 观测数 | 平均值 | 标准差 | 最小值 | 最大值 |
| 被解释变量 | 产业结构高级化 | 3997 | 0.914 | 0.465 | 0.250 | 2.950 |
| 产业结构合理化 | 3997 | 0.275 | 0.204 | 0.000 | 0.890 |
| 核心解释变量 | 政策虚拟变量 | 4054 | 0.144 | 0.351 | 0.000 | 1.000 |
| 控制变量 | 市场化水平 | 3997 | 1.094 | 0.748 | 0.050 | 17.140 |
| 金融发展程度 | 3997 | 2.235 | 1.179 | 0.560 | 21.300 |
| 环境规制 | 3997 | 79.820 | 23.332 | 0.240 | 184.800 |
| 财政投资力度 | 3997 | 4.636 | 1.918 | 0.010 | 13.770 |
| 经济发展水平 | 3997 | 10.412 | 0.722 | 4.600 | 13.060 |
| 城镇化水平 | 3962 | 0.511 | 0.165 | 0.120 | 1.000 |
| 教育水平支出 | 3997 | 0.182 | 0.043 | 0.000 | 0.380 |
| 基础设施 | 3997 | 62.790 | 197.749 | 1.000 | 7937.000 |
| 互联网普及率 | 3865 | 17.220 | 30.863 | 0.010 | 1195.020 |
| 机制变量 | 数字经济规模效应 | 3962 | 2.771 | 2.568 | 0.290 | 35.700 |
| 资源配置优化效应 | 4065 | 9.793 | 1.617 | -2.040 | 15.530 |
| 人力资本供给效应 | 3956 | 0.020 | 0.027 | 0.000 | 0.190 |
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变量的描述性统计
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| 变量类型 | 变量 | 观测数 | 平均值 | 标准差 | 最小值 | 最大值 |
| 被解释变量 | 产业结构高级化 | 3997 | 0.914 | 0.465 | 0.250 | 2.950 |
| 产业结构合理化 | 3997 | 0.275 | 0.204 | 0.000 | 0.890 |
| 核心解释变量 | 政策虚拟变量 | 4054 | 0.144 | 0.351 | 0.000 | 1.000 |
| 控制变量 | 市场化水平 | 3997 | 1.094 | 0.748 | 0.050 | 17.140 |
| 金融发展程度 | 3997 | 2.235 | 1.179 | 0.560 | 21.300 |
| 环境规制 | 3997 | 79.820 | 23.332 | 0.240 | 184.800 |
| 财政投资力度 | 3997 | 4.636 | 1.918 | 0.010 | 13.770 |
| 经济发展水平 | 3997 | 10.412 | 0.722 | 4.600 | 13.060 |
| 城镇化水平 | 3962 | 0.511 | 0.165 | 0.120 | 1.000 |
| 教育水平支出 | 3997 | 0.182 | 0.043 | 0.000 | 0.380 |
| 基础设施 | 3997 | 62.790 | 197.749 | 1.000 | 7937.000 |
| 互联网普及率 | 3865 | 17.220 | 30.863 | 0.010 | 1195.020 |
| 机制变量 | 数字经济规模效应 | 3962 | 2.771 | 2.568 | 0.290 | 35.700 |
| 资源配置优化效应 | 4065 | 9.793 | 1.617 | -2.040 | 15.530 |
| 人力资本供给效应 | 3956 | 0.020 | 0.027 | 0.000 | 0.190 |
), ArticleFig(id=1175092791748215645, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) |
| 产业结构合理化 | 产业结构高度化 | 产业结构合理化 | 产业结构高度化 |
| 政策虚拟变量 | 0.001 (0.106) | 0.083*** (5.843) | -0.003 (-0.485) | 0.043*** (3.305) |
| 市场化水平 | | | 0.001 (0.285) | -0.007 (-1.230) |
| 金融发展程度 | | | 0.003 (0.430) | 0.084*** (4.254) |
| 环境规制 | | | -0.000 (-0.806) | 0.001*** (4.642) |
| 财政投资力度 | | | -0.003 (-1.555) | -0.021*** (-5.984) |
| 经济发展水平 | | | -0.044*** (-3.505) | -0.278*** (-5.008) |
| 城镇化水平 | | | 0.025 (0.873) | -0.259*** (-3.653) |
| 教育水平支出 | | | -0.018 (-0.254) | 0.763*** (4.865) |
| 基础设施 | | | 0.000** (2.281) | -0.000*** (-4.153) |
| 互联网普及率 | | | 0.000** -0.003 | -0.000 (-0.976) |
| 常数项 | 0.059*** (4.071) | 0.7968*** (11.571) | 0.469*** (3.796) | 3.204*** (5.997) |
| 时间固定效应 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 |
| 样本量 | 3997 | 3997 | 3837 | 3837 |
| 调整后R2 | 0.846 | 0.850 | 0.847 | 0.890 |
), ArticleFig(id=1175092791840490334, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=表2, caption=
基准回归结果
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| 变量 | (1) | (2) | (3) | (4) |
| 产业结构合理化 | 产业结构高度化 | 产业结构合理化 | 产业结构高度化 |
| 政策虚拟变量 | 0.001 (0.106) | 0.083*** (5.843) | -0.003 (-0.485) | 0.043*** (3.305) |
| 市场化水平 | | | 0.001 (0.285) | -0.007 (-1.230) |
| 金融发展程度 | | | 0.003 (0.430) | 0.084*** (4.254) |
| 环境规制 | | | -0.000 (-0.806) | 0.001*** (4.642) |
| 财政投资力度 | | | -0.003 (-1.555) | -0.021*** (-5.984) |
| 经济发展水平 | | | -0.044*** (-3.505) | -0.278*** (-5.008) |
| 城镇化水平 | | | 0.025 (0.873) | -0.259*** (-3.653) |
| 教育水平支出 | | | -0.018 (-0.254) | 0.763*** (4.865) |
| 基础设施 | | | 0.000** (2.281) | -0.000*** (-4.153) |
| 互联网普及率 | | | 0.000** -0.003 | -0.000 (-0.976) |
| 常数项 | 0.059*** (4.071) | 0.7968*** (11.571) | 0.469*** (3.796) | 3.204*** (5.997) |
| 时间固定效应 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 |
| 样本量 | 3997 | 3997 | 3837 | 3837 |
| 调整后R2 | 0.846 | 0.850 | 0.847 | 0.890 |
), ArticleFig(id=1175092791907599199, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) | (5) | (6) |
截面 PSM | 逐期 PSM | 替换 被解释变量 | 排除智慧 城市试点 | 排除低碳 城市试点 | CSDID |
| 政策冲击前 | 政策冲击后 |
| 政策虚拟变量 | 0.082*** (2.896) | 0.045** (1.994) | 0.017** (2.378) | 0.047*** (3.714) | 0.053*** (4.123) | 0.011 (1.832) | 0.147*** (4.982) |
| 智慧城市试点 | | | | 0.000 (0.020) | | | |
| 低碳城市试点 | | | | | -0.040*** (-3.897) | | |
| 控制变量 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 时间固定效应 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 样本量 | 2733 | 2982 | 3823 | 3837 | 3837 | | |
| 调整后R2 | 0.572 | 0.598 | 0.907 | 0.891 | 0.891 | | |
), ArticleFig(id=1175092792004068192, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=表3, caption=
稳健性检验
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) | (5) | (6) |
截面 PSM | 逐期 PSM | 替换 被解释变量 | 排除智慧 城市试点 | 排除低碳 城市试点 | CSDID |
| 政策冲击前 | 政策冲击后 |
| 政策虚拟变量 | 0.082*** (2.896) | 0.045** (1.994) | 0.017** (2.378) | 0.047*** (3.714) | 0.053*** (4.123) | 0.011 (1.832) | 0.147*** (4.982) |
| 智慧城市试点 | | | | 0.000 (0.020) | | | |
| 低碳城市试点 | | | | | -0.040*** (-3.897) | | |
| 控制变量 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 时间固定效应 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 样本量 | 2733 | 2982 | 3823 | 3837 | 3837 | | |
| 调整后R2 | 0.572 | 0.598 | 0.907 | 0.891 | 0.891 | | |
), ArticleFig(id=1175092792079565665, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) |
| 城市等级 | 城市第三产业就业比重 | 非资源型城市 | 长江经济带 |
| 政策虚拟变量 | 0.131* (1.799) | 0.091*** (4.027) | 0.043*** (2.780) | 0.092*** (5.739) |
| 常数项 | 4.426*** (4.064) | 3.473*** (3.360) | 5.629*** (9.781) | 3.380*** (7.242) |
| 控制变量 | 是 | 是 | 是 | 是 |
| 时间固定效应 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 |
| 样本量 | 476 | 2304 | 2336 | 1505 |
| 调整后R2 | 0.932 | 0.898 | 0.907 | 0.881 |
), ArticleFig(id=1175092792188617570, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=表4, caption=
异质性检验
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| 变量 | (1) | (2) | (3) | (4) |
| 城市等级 | 城市第三产业就业比重 | 非资源型城市 | 长江经济带 |
| 政策虚拟变量 | 0.131* (1.799) | 0.091*** (4.027) | 0.043*** (2.780) | 0.092*** (5.739) |
| 常数项 | 4.426*** (4.064) | 3.473*** (3.360) | 5.629*** (9.781) | 3.380*** (7.242) |
| 控制变量 | 是 | 是 | 是 | 是 |
| 时间固定效应 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 |
| 样本量 | 476 | 2304 | 2336 | 1505 |
| 调整后R2 | 0.932 | 0.898 | 0.907 | 0.881 |
), ArticleFig(id=1175092792251532131, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) |
| 数字经济规模效应 | 资源配置优化效应 | 人力资本供给效应 |
| 政策虚拟变量 | 0.180** (2.523) | 0.233*** (5.461) | 0.002** (2.505) |
| 常数项 | 0.525 (0.597) | -3.176 (-1.440) | -0.008 (-0.907) |
| 控制变量 | 是 | 是 | 是 |
| 时间固定效应 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 |
| 样本量 | 3683 | 3823 | 3782 |
| 调整后R2 | 0.887 | 0.927 | 0.929 |
), ArticleFig(id=1175092792335418212, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=表5, caption=
机制检验
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| 变量 | (1) | (2) | (3) |
| 数字经济规模效应 | 资源配置优化效应 | 人力资本供给效应 |
| 政策虚拟变量 | 0.180** (2.523) | 0.233*** (5.461) | 0.002** (2.505) |
| 常数项 | 0.525 (0.597) | -3.176 (-1.440) | -0.008 (-0.907) |
| 控制变量 | 是 | 是 | 是 |
| 时间固定效应 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 |
| 样本量 | 3683 | 3823 | 3782 |
| 调整后R2 | 0.887 | 0.927 | 0.929 |
), ArticleFig(id=1175092792423498597, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) |
| HTSP | HTSP | HTSP | HTSP |
| 政策虚拟变量 | 0.0334*** (17.922) | 0.0129*** (8.869) | 0.0226*** (10.988) | 0.0126*** (8.795) |
| 控制变量 | 否 | 否 | 是 | 是 |
| 常数项 | 0.0696*** (124.387) | 0.0664 (19.158)*** | 0.0126 (0.745) | 0.0482** (2.323) |
| 时间固定效应 | 否 | 是 | 否 | 是 |
| 个体固定效应 | 否 | 是 | 否 | 是 |
| 样本量 | 3818 | 3818 | 3683 | 3683 |
| 调整后R2 | 0.1096 | 0.7511 | 0.1596 | 0.7687 |
), ArticleFig(id=1175092792603853670, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1148001303118213658, language=CN, label=表6, caption=
拓展分析
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| 变量 | (1) | (2) | (3) | (4) |
| HTSP | HTSP | HTSP | HTSP |
| 政策虚拟变量 | 0.0334*** (17.922) | 0.0129*** (8.869) | 0.0226*** (10.988) | 0.0126*** (8.795) |
| 控制变量 | 否 | 否 | 是 | 是 |
| 常数项 | 0.0696*** (124.387) | 0.0664 (19.158)*** | 0.0126 (0.745) | 0.0482** (2.323) |
| 时间固定效应 | 否 | 是 | 否 | 是 |
| 个体固定效应 | 否 | 是 | 否 | 是 |
| 样本量 | 3818 | 3818 | 3683 | 3683 |
| 调整后R2 | 0.1096 | 0.7511 | 0.1596 | 0.7687 |
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