目标:使用人口流动性变化的幅度评估了2019年冠状病毒病(COVID-19)大流行期间社会距离的有效性。本研究旨在调查一个直接的指标-即,每位确诊COVID-19患者的密切接触者人数。
方法:从2020年第7周到2021年第43周,根据社交距离严格程度,根据两家韩国电信公司和Google的数据计算人口流动变化。京坪省居民确诊病例及其密切接触者数据,韩国在每个阶段都合并在一起。进行Pearson相关性分析,以将移动数据与通过根据年龄组分层计算的每个确诊病例的接触人数的变化进行比较。人口流动数据的参考值是使用2020年2月中旬之前的值设置的,考虑了每个数据的特征。
结果:在18岁以下的年龄组中,当严格程度加强或放松时,每个确诊病例的密切接触者数量减少或增加,分别。在成年人中,相关性相对较低,每个确诊病例的密切接触者数量的变化与成年人开始接种疫苗后的人口流动变化之间没有相关性。
结论:政府针对COVID-19的社会距离政策的有效性可以使用每个确诊病例的密切接触者数量作为直接指标来评估,尤其是每个年龄段。这种分析可以促进特定群体的政策改变。
OBJECTIVE: The effectiveness of social distancing during the coronavirus disease 2019 (COVID-19) pandemic has been evaluated using the magnitude of changes in population mobility. This study aimed to investigate a direct indicator-namely, the number of close contacts per patient with confirmed COVID-19.
METHODS: From week 7, 2020 to week 43, 2021, population movement changes were calculated from the data of two Korean telecommunication companies and Google in accordance with social distancing stringency levels. Data on confirmed cases and their close contacts among residents of Gyeonggi Province, Korea were combined at each stage. Pearson correlation analysis was conducted to compare the movement data with the change in the number of contacts for each confirmed
case calculated by stratification according to age group. The reference value of the population movement data was set using the value before mid-February 2020, considering each data\'s characteristics.
RESULTS: In the age group of 18 or younger, the number of close contacts per confirmed
case decreased or increased when the stringency level was strengthened or relaxed, respectively. In adults, the correlation was relatively low, with no correlation between the change in the number of close contacts per confirmed
case and the change in population movement after the commencement of vaccination for adults.
CONCLUSIONS: The effectiveness of governmental social distancing policies against COVID-19 can be evaluated using the number of close contacts per confirmed
case as a direct indicator, especially for each age group. Such an analysis can facilitate policy changes for specific groups.