Using daily data of novel coronavirus pneumonia (COVID-19) covering 118 countries from January 1 to April 13, 2021, this research examines the relationship between the government response stringency index (GRSI) and COVID-19 pandemic. The empirical results show that GRSI significantly negatively impacts confirmed cases, and the effects are especially larger around 14 to 21 days after the implementation of the government response. These results are robust through analysis with sub-samples of Asian countries and non-Asian countries, proving that public prevention policies of being isolated for 14 days and being observed for 7 days are effective. The Dumitrescu-Hurlin causality test uncovers a statistically significant bi-directional correlation between government response stringency and COVID-19 pandemic when analyzing the full samples. In terms of the sub-samples, a bi-directional relationship exists between government response stringency and confirmed cases, while one-way causality runs only from government response stringency to deaths in Asian countries. We offer a policy implication that countries all over the world should continue to carry out public prevention policies, and governments in non-Asian countries should be more concerned about confirmed cases.

本研究使用 2021 年 1 月 1 日至 4 月 13 日涵盖 118 个国家/地区的新型冠状病毒肺炎 (COVID-19) 的每日数据，检验政府应对严格指数 (GRSI) 与 COVID-19 大流行之间的关系。实证结果表明，GRSI对确诊病例产生显着负面影响，尤其在政府应对措施实施后的14至21天左右影响更大。通过对亚洲国家和非亚洲国家的子样本分析，这些结果是稳健的，证明隔离 14 天、观察 7 天的公共预防政策是有效的。在分析完整样本时，Dumitrescu-Hurlin 因果关系检验揭示了政府响应严格性和 COVID-19 大流行之间在统计上显着的双向相关性。就子样本而言，政府响应严格程度与确诊病例之间存在双向关系，而亚洲国家政府响应严格程度与死亡人数之间存在单向因果关系。