Evidence map›Paper›PMID 34391402›Full record

ArticleBMC infectious diseases2021

Spatio-temporal distribution characteristics of COVID-19 in China: a city-level modeling study.

Qianqian Ma, Jinghong Gao, Wenjie Zhang, Linlin Wang, Mingyuan Li, Jinming Shi, Yunkai Zhai, Dongxu Sun, Lin Wang, Baozhan Chen and 2 more

Abstract read
In one paragraph

Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Methods Used in the Spatial and Spatiotemporal Analysis of COVID-19 Epidemiology: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
  4. Article
  5. Observational
  6. Evolution of COVID-19 dynamics in Guangdong Province, China: an endemic-epidemic modeling study.Archives of public health = Archives belges de sante publique · 2024
    Article
  7. Article
  8. Article
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  11. Spatial Autocorrelation of COVID-19 in Slovakia.Tropical medicine and infectious disease · 2023
    Article
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  13. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Qianqian Ma *The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Jinghong Gao *The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Wenjie ZhangThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Linlin WangThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Mingyuan LiThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Jinming ShiThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Yunkai ZhaiThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Dongxu SunThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Lin WangThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Baozhan ChenThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Shuai JiangThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Jie ZhaoThe First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. zhaojie@zzu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe coronavirus disease 2019 (COVID-19) has become a pandemic. Few studies have been conducted to investigate the spatio-temporal distribution of COVID-19 on nationwide city-level in China.

objectiveTo analyze and visualize the spatiotemporal distribution characteristics and clustering pattern of COVID-19 cases from 362 cities of 31 provinces, municipalities and autonomous regions in mainland China.

methodsA spatiotemporal statistical analysis of COVID-19 cases was carried out by collecting the confirmed COVID-19 cases in mainland China from January 10, 2020 to October 5, 2020. Methods including statistical charts, hotspot analysis, spatial autocorrelation, and Poisson space-time scan statistic were conducted.

resultsThe high incidence stage of China's COVID-19 epidemic was from January 17 to February 9, 2020 with daily increase rate greater than 7.5%. The hot spot analysis suggested that the cities including Wuhan, Huangshi, Ezhou, Xiaogan, Jingzhou, Huanggang, Xianning, and Xiantao, were the hot spots with statistical significance. Spatial autocorrelation analysis indicated a moderately correlated pattern of spatial clustering of COVID-19 cases across China in the early phase, with Moran's I statistic reaching maximum value on January 31, at 0.235 (Z = 12.344, P = 0.001), but the spatial correlation gradually decreased later and showed a discrete trend to a random distribution. Considering both space and time, 19 statistically significant clusters were identified. 63.16% of the clusters occurred from January to February. Larger clusters were located in central and southern China. The most likely cluster (RR = 845.01, P < 0.01) included 6 cities in Hubei province with Wuhan as the centre. Overall, the clusters with larger coverage were in the early stage of the epidemic, while it changed to only gather in a specific city in the later period. The pattern and scope of clusters changed and reduced over time in China.

conclusionsSpatio-temporal cluster detection plays a vital role in the exploration of epidemic evolution and early warning of disease outbreaks and recurrences. This study can provide scientific reference for the allocation of medical resources and monitoring potential rebound of the COVID-19 epidemic in China.

Indexed as

COVID-19ChinaCitiesHumansPandemicsSARS-CoV-2Spatio-Temporal AnalysisChinaCOVID-19Geographic hotspotSpatio-temporal distributionTime–space scanVisualization

Identifiers

PMID34391402
PMCPMC8363872

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.